Certain |
Possible |
Questionable Doubtful |
Rejected |
|
Confidence is a statement of the site as a medieval fortification or palace |
| Name | Alternative Name(s) | County | Remains |
| Aber Castle Mound | Abermenai; Pen y Mwd; Mwd Castle; Abergwyngregyn; Llan Boduan; Bangor | Caernarfonshire | Earthworks |
| Aberafan Castle | Aber Afan; Aberavon; Beili y Castell; Bailey Castle; Baily'r castell | Glamorgan | Nothing visible |
| Aberedw Motte | Hen Castell; Pen Garreg Wood | Radnorshire | Earthworks |
| Abergavenny Castle | Y Fenni; Bergevenn; Gevenu | Monmouthshire | Major |
| Aberllynfi Castle | Great House; Abberlewin; Abrelenuith; Aberllyfni | Brecknockshire | Earthworks |
| Aberyscir Motte | Brecknockshire | Masonry foundations | |
| Alexanderstone Motte, Llanddew | Mara Mota | Brecknockshire | Earthworks |
| Alisby Castle, Crickhowell | Crucywel; Crug Hywel | Brecknockshire | Masonry ruins/remnants |
| Allt y Ferin, Llanegwad | Din Weilir; Dinweiler | Carmarthenshire | Earthworks |
| Ballan Moor; The Berries | Crick; Ballan Mount; Mount Ballan | Monmouthshire | Earthworks |
| Banc y Bettws, Llangyndeyrn | Banc y Betws, near Tygwyn | Carmarthenshire | Earthworks |
| Bank Llwyndomen, Hendy | Ystum Enlli North; Llanedy | Carmarthenshire | Earthworks |
| Bishops Moat | Castell Hithoet; Castlewright; Castel Wrygh; Castell Vrych; Castle Wrighe; Castell Wrich; Castel Wrigge; Castell Ruht; Castell Rhudd | Montgomeryshire | Earthworks |
| Bishopton Old Castle, Barland | Old Castleton Bishopton; Old Castle Camp; Barland Castle; Bishopston | Glamorgan | Uncertain |
| Blaenporth Castle | Castell Gwythan; Ralphs Castle; Y Gaer; Blaen Porth Hodnant; Castell Gwithian; Brynawelan | Cardiganshire | Earthworks |
| Bleddfa Castle | Bledewach; Bledvach; Bledeach | Radnorshire | Masonry foundations |
| Bogs Mount Castle, Burfa | The Bogs | Radnorshire | Masonry foundations |
| Boughrood Motte | Boskeret | Radnorshire | Cropmarks/slight earthworks |
| Brecon Castle | Aberhonddu; Aberhodeny; Aberhodni; Brecknock; Brecheinoc | Brecknockshire | Major |
| Bron Felin Motte | Bronfelen Mound; Bron Felen; Bronfelin | Montgomeryshire | Earthworks |
| Bronllys Castle | Brunless; Brynllys; Brendlais | Brecknockshire | Major |
| Bryn Castell, Caerhun | Tal Y Cafn; Castell Maelgwn | Caernarfonshire | Earthworks |
| Bryn y Castell, Knighton | Bryn Castell; Cnicteton; Cnichton; Trefylco | Radnorshire | Earthworks |
| Brynwell Leckwith, Beganston | Berganston | Glamorgan | Earthworks |
| Builth Wells Castle | Buellt; Llanfair-ym-Muallt | Brecknockshire | Masonry ruins/remnants |
| Caer Beris Motte | Llangantan; Llanganten | Brecknockshire | Earthworks |
| Caer Castell, St Mellons | Pen y pil; Witla Court; Cae Castle | Monmouthshire | Earthworks |
| Caerau Castle | Kayre; Cayre | Glamorgan | Earthworks |
| Caerau Motte, Treflys | Twdin; Treflis King | Brecknockshire | Cropmarks/slight earthworks |
| Caerleon Castle | Caerllion | Monmouthshire | Masonry ruins/remnants |
| Caernarfon Castle | Caernarvon; Carnarvon | Caernarfonshire | Major |
| Caerwent Motte | Castell Gwent | Monmouthshire | Earthworks |
| Caldicot Castle | Caldecot; Conscuit | Monmouthshire | Major |
| Camrose Castle | Camros | Pembrokeshire | Earthworks |
| Cardiff Castle | Caerdydd; Caerdiff; Caerdyf; Kidis; Kerdif | Glamorgan | Major |
| Cardigan Castle | Aberteifi | Cardiganshire | Masonry ruins/remnants |
| Carew Castle | Castell Caeriw | Pembrokeshire | Major |
| Carmarthen Castle | Caermarthen; Caerfyrddin; Caermarddin; Rhyd y Gors; Rhyd Cors | Carmarthenshire | Masonry ruins/remnants |
| Carn Fadryn | Garn Fadryn; Carn Fadrun; Madryn; Garn Fadrun | Caernarfonshire | Masonry ruins/remnants |
| Carreghofa Castle | Carreghova; Carreghove; Karrecouain; Karakawein; Karrecove; Caroclove; Carrecoel; Carrecoen; Karrechove; Carrec Huwa; Tanat Camp | Montgomeryshire | Earthworks |
| Castell Aber Cafwy, Trefenty | Llanfihangel Abercywyn; Abercowyn; Aber Taf; Aber Carwy; Aber Covwy; Aber Cafury; Oysterflow; Osterlow; Ystlwyf; Treventy | Carmarthenshire | Earthworks |
| Castell Aberlleiniog | Castell Llienawg; Aberllienawg; Castle in Anglesey; Castell Leiniog | Anglesey | Earthworks |
| Castell Blaenllynfi | Blaen Llyfni; Blaen Lleveny; Blaenllyfni; Blaenllynvi | Brecknockshire | Masonry foundations |
| Castell Cadwaladr, Caer Penrhos | Llanrhystud; Caer Penrhoys; Caerpenrhos; Gaer Penrhos | Cardiganshire | Earthworks |
| Castell Caer Wedros | Caerwedros; Gaer Odris; Llwyn Davydd Castell; Castell Llwyndafydd; Castell Meib Wynion; Mab Wynion | Cardiganshire | Earthworks |
| Castell Coch | Rubeum Castrum | Glamorgan | Masonry ruins/remnants |
| Castell Crugerydd | Crug Eryr; Cruker; Llanfihancel Nant Melan; castrum Crukeri | Radnorshire | Earthworks |
| Castell Crychydd | Herons Castle; Castell Cicydd | Pembrokeshire | Earthworks |
| Castell Cwm Aran | Cymaran; Cymaron; Gemaron; Camaron; Caperun; Cwm Avon; Cwm Aron; Kamhawn; Cans Castle; Cuthremion | Radnorshire | Earthworks |
| Castell Cynfal, Bryn Crug | Cynfael; Towyn; Bryn y Castell | Merioneth | Earthworks |
| Castell Dinas | Bwlch y Ddinas; Castell Ddinas; Bwlch y Dinas; Bulkdinas; Waynards Castle | Brecknockshire | Masonry foundations |
| Castell Du, Llanfihangel Ar Arth | Carmarthenshire | Earthworks | |
| Castell Eglwyswrw | Tyddin; Eglwsywrw | Pembrokeshire | Earthworks |
| Castell Foel Allt | Pilleth; Haled; Vallet | Radnorshire | Earthworks |
| Castell Glas | Greenfield; Green Castle; Maes Glas; Maesglas Castle; Maindy Hill Camp | Monmouthshire | Earthworks |
| Castell Gronw, Bala | Llangower; Castell Gronw Bevr o Benllyn | Merioneth | Earthworks |
| Castell Gwain Goch, Penrhyndeudraeth | Deudraeth; Deudrait; Castell Aber Iâ; Portmeirion; Gwaun Goch | Merioneth | Cropmarks/slight earthworks |
| Castell Gwallter, Geneu'r Glyn | Castell Gwalter; Penweddig; Pengwern; Llanfihangel Geneur Glyn; Castell Walter; Gaer Brynhir; Castell Penwedig; Chastell Gwalter | Cardiganshire | Earthworks |
| Castell Gwarcwm, Rhosgoch | Stradpeithyll; Ystrad Peithyll; Strath Peithyll; Rhydydomen; Razos Castle; Ystrad Peithyl, Castell Peithyll Rhosgoch. | Cardiganshire | Earthworks |
| Castell Haidd, Hayscastle | Haycastle; Hayscastell | Pembrokeshire | Earthworks |
| Castell Hendre | Henrys Moat; Castell Hendrev | Pembrokeshire | Earthworks |
| Castell Hywel, Llandysul | Humphrey Castle; Castell Hwmphre; Valley of Cletwr; Howels Castle; Castell Howell; Castell Wmphre; Castell Hywell; Castell Wmffre | Cardiganshire | Earthworks |
| Castell Madoc Motte | Madog; Llanfihangel Fechan 1; Madoc South | Brecknockshire | Earthworks |
| Castell Madoc Ringwork | Madog; Llanfihangel Fechan 2; Madoc North | Brecknockshire | Earthworks |
| Castell Mawr, Llanboidy | Carmarthenshire | Cropmarks/slight earthworks | |
| Castell Meredydd | Machen | Monmouthshire | Masonry foundations |
| Castell Meurig, Llangadog | Castell Meiris; Castell Pridd; Lychewein | Carmarthenshire | Earthworks |
| Castell Nanhyfer, Nevern | Cammais; Cammeis; Cemmeis; Llanhyvor | Pembrokeshire | Earthworks |
| Castell Nant y Garan, Llandyfroig | Nant y Garau; Nant y Carau; Llanfair–Orllwyn | Cardiganshire | Earthworks |
| Castell Nonni, Llanllwni | Castell Psysg; Castell Y | Carmarthenshire | Earthworks |
| Castell Pen yr Allt | Llantood; Castell yr Allt | Pembrokeshire | Masonry foundations |
| Castell Pencader, Llanfihangle Ar Arth | Mabudrud; Mabudryd; Dinweiler | Carmarthenshire | Earthworks |
| Castell Prysor | Cwm Prysor | Merioneth | Earthworks |
| Castell Tal y Fan | Talavan; Tallaunt; Talyfan Castle | Glamorgan | Masonry foundations |
| Castell Tinboeth, Llananno | Castelltinboeth; Tynbot; Tinbech; Timbei, Timpath; Timbod; Tynboeth; Tyn y Bwlch; Tyn yn y Bwlch; Ty yn yr Bwlch; Ty yn y Bwlch; Tilloed; Dinbaud; Dunawd; Dyneneboth; Dwybod; Dynelegh; Dymbaud | Radnorshire | Masonry foundations |
| Castell Trefilan | Trifilan | Cardiganshire | Earthworks |
| Castell y Domen, Llangyndeyrn | Pont Antwn; Gwempa; Llangendeirne | Carmarthenshire | Earthworks |
| Castell y Waun Motte, Chirk | Ceiriog | Denbighshire | Earthworks |
| Castle Caereinion Motte | Twmpatch Garmon; Twmpath Garmon | Montgomeryshire | Earthworks |
| Castle Kinsey, Court Evan Gwynne | Cwrt Gwynne; Clyro 2; Court Evan Glynne | Radnorshire | Earthworks |
| Castle Nimble, Old Radnor | Knapp; Maes Hyfaidd; Maes Hyvaidd | Radnorshire | Earthworks |
| Cefn Bryntalch Motte, Llandyssil | Llandyssul; Castle Wood; Cefnbryntalch | Montgomeryshire | Earthworks |
| Cefnllys Old Castle | Dinieithon; Kenflyc; Dinyetha in Melenith | Radnorshire | Earthworks |
| Cilgerran Castle | Emlyn; Cenarth Bychan; Cenarth Fechan; Kilgarren | Pembrokeshire | Major |
| Cilwhybert Motte | Modrydd; Old Manor Farm; Cilgilbert | Brecknockshire | Earthworks |
| Clyro Castle | La Royl | Radnorshire | Earthworks |
| Coed y Cwm, St Nicholas | Bolston | Glamorgan | Earthworks |
| Coity Castle | Coyty; Coety | Glamorgan | Major |
| Colwyn Castle | Mauds Castle; Mawds; Colunwy; Clun | Radnorshire | Earthworks |
| Craig Ruperra Motte | Castell Breiniog; Castell y ddraenen; Coed Craig Ruperra; Castell Breiniol; Remmi; Remni | Glamorgan | Earthworks |
| Crickadarn Ringwork | Crucadarn; Castle Field | Brecknockshire | Earthworks |
| Cwm Camlais Castle | Camlais; Bleancamlais; Maescar; Defynoch; Defynock; Dyfynoch; 'new castle beyond Brecon' | Brecknockshire | Masonry foundations |
| Cwm Meurig Isaf | Castell Ystrad–Meurig; Castell Pridd | Cardiganshire | Earthworks |
| Cymmer Castle, Llanelltyd | Cymer | Merioneth | Earthworks |
| Degannwy Castle | Castle of Gannoc; Gannock; Dagaunoth; Deganwy | Caernarfonshire | Masonry foundations |
| Dinas Emrys Castle | Caernarfonshire | Masonry foundations | |
| Dinas Powys Ringwork | Cwm George Camp; Cwrt-yr-ala | Glamorgan | Earthworks |
| Dinefwr Castle | Dynevor; Gueithtinevur; Dinefawr; Old Dynefwr; Dinevor | Carmarthenshire | Major |
| Dinerth Castle, Castell Allt Craig Arth | Hero; Monachty; Dinierth; Dineirth; Llanrhystid | Cardiganshire | Earthworks |
| Dingestow Castle | Landinegath; Llandingat; Landinegat | Monmouthshire | Earthworks |
| Dixton Motte | Monmouthshire | Earthworks | |
| Dolbedwin Motte | Talybedwyn Tump; Dolybedwyn; Newchurch; Llys Ifor; Dolbedwyn | Radnorshire | Earthworks |
| Dolbenmaen Castle | Tomen; Plas Dolbenmaen | Caernarfonshire | Earthworks |
| Domen Castell, Welshpool | Domen Gastell; Pola; Pole; Pool; Pol; Powis; Trallwng; Trallung; Trallwm | Montgomeryshire | Earthworks |
| Domen Ddreiniog, Llanegryn | Tomen Ddreiniog; Thorny Motte; Tal y Bont | Merioneth | Earthworks |
| Domen Fawr, Tafolwern | Walwerin; Walwern; Waluernia; Walwar; Talfolwern | Montgomeryshire | Earthworks |
| Domen Gastell, Llanfechain | Domen Castell; Tomen Gastell | Montgomeryshire | Earthworks |
| Domen Las, Ysgubor y Coed | Abereinion; Aberdyfi; Aberdovey; Glan Dyfi; Tomen Las; Domenlas | Cardiganshire | Earthworks |
| Egwys Cross Motte | Eglwys Cross, Mount Cop Castle; Tybroughton | Flintshire | Earthworks |
| Erddig Castle, Wrexham | Wrecsam; Erthcote; Wristleham; Wristlesham | Denbighshire | Earthworks |
| Felin Isaf Motte, Llantrisant | Glamorgan | Earthworks | |
| Fforest Wood Castle | Cregrina; Forest Wood Mount | Radnorshire | Earthworks |
| Foel Las Motte, Pentrefoelas | Foel; Voelas; Llanfair Rhyd; Hen Foelas; Y Foelas; Castell Coch | Denbighshire | Earthworks |
| Garn Fawr Motte, Newchurch and Merthyr | Castell Waunllannau; Yr Hen Gaer; Cnwc | Carmarthenshire | Earthworks |
| Gelli Garn Ringwork | St Mary Hill; Hill House | Glamorgan | Earthworks |
| Granvilles Castle, Neath | Neath Motte; Castell-nedd | Glamorgan | Nothing visible |
| Great Rudbaxton Mount | Pembrokeshire | Earthworks | |
| Gro Tump Motte | Castell y Dale | Montgomeryshire | Earthworks |
| Grosmont Castle | Grismond; Grossemont | Monmouthshire | Major |
| Gwern y Domen | Domen Bedwas, Van Castle | Glamorgan | Earthworks |
| Hawarden Castle | Penharddlech; Penarlag; Hawurd; Harden | Flintshire | Major |
| Hay Castle | Hay-on-Wye Castle; Gelli; Tregelli; castello de haia; La Haie Taillee | Brecknockshire | Masonry ruins/remnants |
| Hay Tump | Hay-on-Wye Motte; Gelli; Tregelli; Swan Hotel; castello de haia La Haie Taillee | Brecknockshire | Earthworks |
| Hen Blas | Basingwerk; Dinas Bassing; Coleshill Fawr; Coleshill Castle | Flintshire | Earthworks |
| Hen Domen, Old Montgomery Castle | Baldwins Castle; Muntgumeri | Montgomeryshire | Earthworks |
| Hendre Isaf Motte, Llangernyw | Domen Pentre Isaf; Llangerniew | Denbighshire | Earthworks |
| Hendy Castle | Ystum Enlli South; Llanedy | Carmarthenshire | Earthworks |
| Holywell Castle Mound | Treffynnon; Bryn y Castell; Treffynnawn; Basingwerk; Dinas Bassing | Flintshire | Earthworks |
| Hughs Castle, Llandeilo Talybont | Tal y Bont; Castell Du; Castle Hu; Banc y Rhyfel; Talybonet in Gower | Glamorgan | Earthworks |
| Hundred House; The Mount | Brynllwyd Mount; Glan Edw | Radnorshire | Masonry foundations |
| Hyssington Castle | Castle Hill; Sneth; Snead; Sned; Snet | Montgomeryshire | Masonry foundations |
| Kemeys Inferior Motte | Kemys Motte; Gipsies Mount; Gypsies Tump | Monmouthshire | Earthworks |
| Kenfig Castle | Kengfig; Kinefeage | Glamorgan | Masonry foundations |
| Kerry; The Moat | Moat Farm; Kerry Motte; Moat Castle | Montgomeryshire | Earthworks |
| Kidwelly Castle | Cydweli | Carmarthenshire | Major |
| Knighton Castle Mount | Cnicteton; Cnichton; Trefylco; Trefeclaud; Trefclawdd | Radnorshire | Earthworks |
| Ladys Mount, Powis Castle Park | Ladys Mound; Pola; Pole; Pool; Powis; Trallwng; Trallwm | Montgomeryshire | Earthworks |
| Langstone Court Motte | Monmouthshire | Earthworks | |
| Laugharne Castle | Abercorran; Abercorram; Talacharn; Talcharn; Talachar | Carmarthenshire | Major |
| Llandelio Graben Motte | Llanbedr Motte; Llanddewi Mound | Radnorshire | Earthworks |
| Llandovery Castle | Canterbohhan; Cantref Bychan; Llanymddyfri; Llanymdyfri | Carmarthenshire | Masonry ruins/remnants |
| Llanelli Old Castle | Carnwyllion; Castle of Carnwillion | Carmarthenshire | Earthworks |
| Llanfyrnach Motte | Pembrokeshire | Earthworks | |
| Llangadfan Motte | Cann Office Hotel | Montgomeryshire | Earthworks |
| Llangibby Motte | The Bowling Green; Llangybi; Tregrug | Monmouthshire | Earthworks |
| Llangwm Uchaf | Camp House; Beiliau Llangwm | Monmouthshire | Earthworks |
| Llangynwyd Castle | Tir yr Iarll; Castell Coch; Llangwynyd; Llangennydd; Llangeneu | Glamorgan | Masonry foundations |
| Llanidloes Castle | Montgomeryshire | Nothing visible | |
| Llanilid Castle | Glamorgan | Earthworks | |
| Llanllwni Mount | Carmarthenshire | Earthworks | |
| Llanquian Castle | Glamorgan | Masonry foundations | |
| Llansteffan Castle | Llanstephan; St Stephen | Carmarthenshire | Major |
| Llanthomas Motte, Llanigon | Brecknockshire | Earthworks | |
| Llantrisant Castle | Glamorgan | Masonry ruins/remnants | |
| Llantrithyd Ringwork | Llantrythyd Ringwork; Llantrythyd Moat; Llantrithyd Castle; Llanthrithyd | Glamorgan | Earthworks |
| Llawhaden Castle | Llanyhadein; Lauwadein; Lanwadein; Llanwhadein; Lawhaden; Lahaden | Pembrokeshire | Major |
| Llyssun Motte | Llysin; Llyssin; Llanerfyl; Llyslun | Montgomeryshire | Earthworks |
| Loughor Castle | Aberllwchwr; Casllwchwr; Lochor; Castell Llychwr | Glamorgan | Masonry ruins/remnants |
| Lower Min y Llyn Motte | Lower Munlyn; Mon-y-llyn | Montgomeryshire | Earthworks |
| Luggy Motte, Berriew | Lower Luggy Moat; The Moat, Upper Luggy Farm; The Moat, Luggy Bridge | Montgomeryshire | Earthworks |
| Maes Celyn Motte, Crickhowell | Maescelyn Castle | Brecknockshire | Earthworks |
| Manafon Motte | Manafan; The Moat | Montgomeryshire | Earthworks |
| Manorbier Castle | Meanor Pir; Maenor Pyrr; Manorbeer; Manober | Pembrokeshire | Major |
| Mathrafal Castle | Madrael; Matafall | Montgomeryshire | Masonry foundations |
| Mill Wood Motte, Dingestow | The Mound; Llandingat | Monmouthshire | Earthworks |
| Mold; The Bailey Hill | Montalt; Mohaut; Monhalt; Mouhaut; Montalto; Gwyddgrug; Guiddgrug; Yr Wyddgrug; Wydrug; Wyrebruch | Flintshire | Earthworks |
| Monmouth Castle | Mingui; Mori | Monmouthshire | Masonry ruins/remnants |
| Morganstown Motte | Tongwynlais | Glamorgan | Earthworks |
| Mountyborough, Old Penrice Castle | Mounty Bank; Mounty Brough | Glamorgan | Earthworks |
| Moynes Court | Monmouthshire | Masonry ruins/remnants | |
| Nantcribba Castle | The Gaer, Nant y Cribbau; Gwyddgrug; Wydrug; Wyrebruch; Nant Cribau | Montgomeryshire | Masonry foundations |
| Neath Castle | Castell-nedd; Neth | Glamorgan | Masonry ruins/remnants |
| Nefyn | Tomen Nevin | Caernarfonshire | Earthworks |
| Neuadd Goch Motte | Neuadd Coch; Nuadd Goch | Montgomeryshire | Earthworks |
| New Moat Motte | Nova Mota | Pembrokeshire | Earthworks |
| New Radnor Castle | Maes Hyfaidd; Maes Hyvaidd | Radnorshire | Masonry foundations |
| Newcastle Bridgend Castle | Glamorgan | Major | |
| Newcastle, Llangattock Vibon Avel | Monmouthshire | Earthworks | |
| Newport Castle, Pembrokeshire | Trefdraeth | Pembrokeshire | Masonry ruins/remnants |
| Newtown Hall Motte | Montgomeryshire | Earthworks | |
| Norton Motte | Radnorshire | Earthworks | |
| Ogmore Castle | Castle of William of London; William de Londres | Glamorgan | Masonry ruins/remnants |
| Old Hall Camp | Huberts Folly; Castell Machaethlon; Old Hall Ffrydd; Old Hall Frydd; Stultita Huberti | Montgomeryshire | Earthworks |
| Oldcastle Bridgend | Nolton | Glamorgan | Nothing visible |
| Overton Castle | Auretone; Averetone | Flintshire | Nothing visible |
| Owain Glyndwrs Mount | Glyndyfrdwy; Owen Glendower's Mound | Merioneth | Earthworks |
| Oystermouth Castle | Ystum Llwynarth; Ostrelaf | Glamorgan | Major |
| Painscastle | Pain's Castle; Payn's Castle; Castle Paine; Mauds Castle; Castrum Matildis; Elfael; Elvael; Castle Matilda; Garde Doloureuse | Radnorshire | Earthworks |
| Parc y Castell, St Davids | Penlan | Pembrokeshire | Earthworks |
| Parc y Domen Issa, Cenarth | Cenarth Fawr; Y Domen Fawr | Carmarthenshire | Earthworks |
| Pembroke Castle | Penfro; Penbroch | Pembrokeshire | Major |
| Pen y Castell, Llanidloes | Montgomeryshire | Earthworks | |
| Pen y Cnap, Llanegwad | Carmarthenshire | Earthworks | |
| Pen-uchar llan, Llanfor | Merioneth | Earthworks | |
| Penarth Motte | Cregrina; Cenarth Mount | Radnorshire | Earthworks |
| Pencelli Castle | Penkelly; Pengelli; Pencelly | Brecknockshire | Masonry foundations |
| Penhow Castle | Monmouthshire | Major | |
| Penller Castell | Penllyr; New Castle in Gower; Penlle'r Castell | Glamorgan | Earthworks |
| Penmaen Burrows Ringwork | Castle Tower | Glamorgan | Earthworks |
| Penmark Castle | Penmarc | Glamorgan | Masonry ruins/remnants |
| Pennard Castle | Penard; Penarth | Glamorgan | Masonry ruins/remnants |
| Penrhos Castle | Penros; Penros Farm; Coed y mount | Monmouthshire | Earthworks |
| Picton Motte, The Belvedere | Dungledi | Pembrokeshire | Earthworks |
| Pointz Castle | Punch Castle; Poyntz; Castrum Poncii | Pembrokeshire | Earthworks |
| Prestatyn Castle | Flintshire | Earthworks | |
| Presteigne; The Warden | Llanondras | Radnorshire | Earthworks |
| Raglan Castle | Ragland; Yellow Tower of Gwent; Twyn y Ceirios | Monmouthshire | Major |
| Rhayader Castle | Tower Mount; Rhaiadyr; Rhaiadr; Rhaedr Gwy; Rhaidr Gwy; Rhys Castle | Radnorshire | Earthworks |
| Rhos Ddiarbed, Llandinam | The Moat; Moat Lane | Montgomeryshire | Earthworks |
| Rhyd yr Onen Moat, Llangurig | Rhyd yn Owen | Montgomeryshire | Earthworks |
| Roft Motte | The Rofft; Rofft Mount; Marford; Hoseley; Bromfield | Flintshire | Cropmarks/slight earthworks |
| Rumney Castle | Rhymney; Cae Castell; Reigni; Remni; Renni; Remmi | Monmouthshire | Earthworks |
| Sentence Castle, Templeton | Arberth; Narberth | Pembrokeshire | Earthworks |
| Simons Castle, Churchstoke | Symons; Simonds; Symondes; Symonds; Sneth; Snead; Sned; Snet | Montgomeryshire | Masonry foundations |
| Soldiers Grave, Bonvilston | Glamorgan | Earthworks | |
| St Clears Castle | Banc y Beili; Ystrad Cyngen; Rhyd Y Gors; St Clare | Carmarthenshire | Earthworks |
| St Donats Castle | St Donatt's | Glamorgan | Masonry ruins/remnants |
| St Fagans Castle | Glamorgan | Masonry ruins/remnants | |
| St Illtyds Castle, Llanhilleth | Twyn; Llanhithel; Castell Hithell; Y Tump; Twmp Siencyn Sion; Twmp y Castell | Monmouthshire | Earthworks |
| St Ishmaels Tump | Pembrokeshire | Earthworks | |
| St Marys Yard Mound, Llanfair Kilgeddin | Llanfair Kilgedin; St Mary Hill | Monmouthshire | Earthworks |
| Stanage Farm Motte | Lower Stanage | Radnorshire | Earthworks |
| Stephens Castle, The College, Lampeter | Llan Ystyffan; Castell Pont Steffan; Castell Pont Stuffan; Castle of Mabwynion; Llanbedr; Pont Stephen | Cardiganshire | Earthworks |
| Stow Hill Motte | Newport; Casnewydd; Twyn Gwnlliw | Monmouthshire | Nothing visible |
| Sully Castle | Glamorgan | Masonry ruins/remnants | |
| Swansea Castle | New Castle; Abertawe; Seinhenydd; Gower; Goher; Sueineshea; Suenesel; Senghenydd | Glamorgan | Masonry ruins/remnants |
| Sycharth Castle, Llansilin | Castle of Owain Glyndwr; Saghern | Denbighshire | Earthworks |
| Tan y Castell | Aberrheidol; Rhyd y Felin; Llanychaiarn; Tyn y Castell; Tan y Bwlch; Old Aberystwyth; Aberstuyth | Cardiganshire | Earthworks |
| Tir y Dail house, Ammanford | Old Castle; Castell Rhydaman | Carmarthenshire | Earthworks |
| Tomen Bedd Urge, Llanddewi Ystradenny | Castell Cwm Aran; Tomen Buddurge; Tomen Bedd Turc; Bedd-y-gre | Radnorshire | Earthworks |
| Tomen Castell, Old Dolwyddelan | Caernarfonshire | Earthworks | |
| Tomen Castle, Cae Banal | Llanfihangel Nant Melan | Radnorshire | Earthworks |
| Tomen Cefncoch Motte | Tyncelyn; Pennant; Ty'n y celyn | Montgomeryshire | Earthworks |
| Tomen Fawr, Llanystumdwy | Dolwydln; Domen Fawr; Llanystwmdwy; Glan-llynau | Caernarfonshire | Earthworks |
| Tomen Gastell, Bala | Tomen y Castell; Hen Hafod; Llanfor | Merioneth | Earthworks |
| Tomen Las Castle Mound, Pennal | Y Domen Las; Towyn | Merioneth | Earthworks |
| Tomen Llanio, Llanddewi Brefi | Castle of Richard de la Mare | Cardiganshire | Earthworks |
| Tomen Llansantffraid, Rhayader | Llansantffraid Cwmdeuddwr; Park Style; Rhaeadr; Motimers Castle | Radnorshire | Cropmarks/slight earthworks |
| Tomen y Bala, Bala | Merioneth | Earthworks | |
| Tomen y Cefnlloer, Llanfyllin | Moel Froehas Motte; Tomen Moel Frochas; Tomen Moel Frocas; Tomen Cefnlloer; Tomen Cefn Lloer; Cefn Llawr; Tomen Yr Cefnlloer; Tomen Yr Cefn lle oer | Montgomeryshire | Earthworks |
| Tomen y Clawdd, Llantwit Fardre | Llantwit Vaerdre; Coed y Twr | Glamorgan | Earthworks |
| Tomen y Faerdre, Llanarmon yn ial | Yale; Tomen y Vardra | Denbighshire | Earthworks |
| Tomen y Maerdy Motte | Glantanat Isaf; Llanrhaiadr ym Mochnant; Tomen y Faerdre | Denbighshire | Earthworks |
| Tomen y Mur, Maentwrog | Mur Castell | Merioneth | Earthworks |
| Tomen y Rhodwydd, Llandegla | Castell y Rhodwydd; Buddugre; Llanarmon yn Ial; Yale; Castle in Ial; Castell yr Adwy | Denbighshire | Earthworks |
| Tomen yr Allt Motte, Llanfyllin | Boyddon; Domen yr Allt; Bodyddon; Bodedon | Montgomeryshire | Earthworks |
| Tomenlawddog, Llangeler | Tomen Llawddog; Domen Llawddog;Tomen Maesllan; Penboyd; Penbeher | Carmarthenshire | Earthworks |
| Tomenseba, Llangeler | Domen Seba, Bwlch y Domen; y Domen Fawr; Tomen Soba; Penboyr; y Tomen Fawr | Carmarthenshire | Earthworks |
| Tre Castle, Raglan | Llangovan; Pen y Clawdd; Trecastle | Monmouthshire | Earthworks |
| Trecastle Motte | Castle Tump, Trecastle; Trecastle Castle; Castell Trecastell | Brecknockshire | Earthworks |
| Tredustan Motte | Turstenton; Tredwstan | Brecknockshire | Earthworks |
| Treoda, Whitchurch | Tre Oda; Album Monasterium; Blank Mouster; Kibor; Castellum Kibur | Glamorgan | Cropmarks/slight earthworks |
| Tretower Castle | Stratdewy; Ystrad Yw; Stratewy; Straddewy | Brecknockshire | Major |
| Tump Terret, Trellech | Trelleck; Trillech; Twyn Tirret | Monmouthshire | Earthworks |
| Twm Barlwm, Risca | Twyn Bar-lwm; Twm barlwm; Craig y Neuadd | Monmouthshire | Uncertain |
| Twmpan Motte, Llangors | Tymaur Motte; Llangasty Tal y Llyn; Llangasty Talyllyn Twmpan | Brecknockshire | Earthworks |
| Twmpath Motte, Rhiwbina | Whitchurch, Caer Cynwrig | Glamorgan | Earthworks |
| Twthill, Old Rhuddlan Castle | Toothill; Tut Hill; Bonc Hill; Roelent; Roeland | Flintshire | Earthworks |
| Twyn Castell, Gelligaer | Cadwallon | Glamorgan | Earthworks |
| Twyn Tudur, Mynddislwyn | Twyn Tudor | Monmouthshire | Earthworks |
| Twyn y Gregen, Llanarth | Twyn y Cregen | Monmouthshire | Earthworks |
| Ty Newydd Mount, Llannor | Y Mount | Caernarfonshire | Earthworks |
| Usk Castle | Brynbuga; Brunebegy; Burenbegie; Huske; Uske; Oscae | Monmouthshire | Major |
| Walwyns Castle | Castell Gwalchmai; Castle Gawayn | Pembrokeshire | Earthworks |
| Wiston Castle | Gwys; Wiz; Wizton; Wizos Castle; Castell Gwis | Pembrokeshire | Masonry ruins/remnants |
| Wolfscastle Motte | Wolfs Castle; Castrum Lupi; Cas Blaidd; Moldiscastel; Wolfiscastel | Pembrokeshire | Earthworks |
| Womaston Castle | Radnorshire | Earthworks | |
| Y Gaer, St Nicholas | Cottrell Ringwork; Coed y Cwm | Glamorgan | Earthworks |
| Ystrad Meurig Castle | Henblas; Meyric | Cardiganshire | Masonry foundations |
| Ystradowen Motte | Druids Grove | Glamorgan | Earthworks | Aberffraw llys and motte | Anglesey | Earthworks | Abergele; The Mount | The Peel | Denbighshire | Cropmarks/slight earthworks | Aberllynfi Church Hall Mound | Glasbury | Brecknockshire | Earthworks | Adpar Motte, Llandyfriog | Atpar | Cardiganshire | Earthworks | Allt Pant Glas, Llanpumsaint | Carmarthenshire | Earthworks | Ard Den y Domen Placename | Castell Madoc | Brecknockshire | Nothing visible | Barland Motte | Radnorshire | Earthworks | Bauzans Castle | Breigan Castle; Brigam; Brigan | Glamorgan | Uncertain | Beili Helyg Motte | Crwcws Castle | Brecknockshire | Earthworks | Bishton Castle | Lankes Castle; Lanckiscastle; Bishopston | Monmouthshire | Cropmarks/slight earthworks | Blackwood Enclosure, Trewern | Craig Pwll-du | Radnorshire | Earthworks | Bon y Dom | Caernarfonshire | Nothing visible | Briton Ferry Motte | Hen Gastell | Glamorgan | Earthworks | Bryn Castell, Bagillt | Basingwerk; Dinas Bassing | Flintshire | Earthworks | Bryn Derwen Motte, Llandyssil | Bryn Derwyn | Montgomeryshire | Cropmarks/slight earthworks | Bryn y Cwn Motte, Flint | Plas yn Balls; Bryn-cwn; Bryn y cwm | Flintshire | Earthworks | Bryn-ffanigl Uchaf | Denbighshire | Earthworks | Cae Burdydd Castle, Vaynor | Faenor; Vaenor | Brecknockshire | Earthworks | Cae Castell Placename, Llangurig | Montgomeryshire | Nothing visible | Cae Castell, Llechart | Rhyndwyclydach; Nant Llwydyn | Glamorgan | Earthworks | Cae Thygle Enclosure, Berriew | Caethugley; Cae Thugley | Montgomeryshire | Earthworks | Caer Dynnaf, Llygod Old Castle | Old Llanbeddian; Llanblethian Castle; Llanblethian Hill; St Quintin's | Glamorgan | Earthworks | Caer Siac Motte, Bettws Cedewain | Cefn Ucheldre | Montgomeryshire | Earthworks | Cardigan Old Castle Motte | Aberteifi; Dingeraint; Dingereint | Cardiganshire | Earthworks | Castell Abereinon | Cilcraig; Cil y Craig | Cardiganshire | Nothing visible | Castell Abersoch | Castell Aber-Soch; Hen Gaer; Castellmarch | Caernarfonshire | Cropmarks/slight earthworks | Castell Bach, Llanwinio | Carmarthenshire | Earthworks | Castell Bryn Gwyn | Castle of King Olaf; Bon y Dom | Anglesey | Earthworks | Castell Cadwgan, Aberaeron | Aberatron | Cardiganshire | Nothing visible | Castell Caemaerdy, Llanelwedd | Castell Cae Maerdy; Cefn Dyrys; Caemardy | Radnorshire | Earthworks | Castell Cossan | Eglwys Fair a Churig; Castell Coshan; Parc Castell | Carmarthenshire | Cropmarks/slight earthworks | Castell Cottage, Penbontrhydyfothau | Cardiganshire | Uncertain | Castell Crwn | Llanrhwdrys; Castell Rhonyn | Anglesey | Earthworks | Castell Cwmere, Llanfihangel Ystrad | Temple Bar | Cardiganshire | Earthworks | Castell Cynon, Lampeter Velfrey | Lampeter Velfry; Castell Cynen | Pembrokeshire | Earthworks | Castell Dol Wllf, Llanwenog | Castell Santesau; Castell Sant Esau; Castell Sant Esen | Cardiganshire | Cropmarks/slight earthworks | Castell Du, Llanwnen | Llanwnnen, Castell Ddu | Cardiganshire | Cropmarks/slight earthworks | Castell Dyffryn Mawr | Llanfair Nant Gwyn; Parc y Domen | Pembrokeshire | Earthworks | Castell Gwynionydd, Llandysul | Coedfon | Cardiganshire | Earthworks | Castell Henllys, Nevern | Pembrokeshire | Earthworks | Castell Llainfawr | Llain-fawr | Pembrokeshire | Earthworks | Castell Llanddeiniolen | Tymawr | Caernarfonshire | Cropmarks/slight earthworks | Castell Llwyn Bedw | Llwynbedw; Lwm Bwa | Carmarthenshire | Cropmarks/slight earthworks | Castell Mael, Puncheston | Castell Moel; Punchesterton | Pembrokeshire | Earthworks | Castell Mawr, Llanwinio | Carmarthenshire | Uncertain | Castell Moch Fawr, Llanrhaiadr ym Mochnant | Castell Mochnant | Montgomeryshire | Nothing visible | Castell Moeddyn Fach, Llanarth | Moyddin Fach; Moeddyn-fach; Moeddin Fach | Cardiganshire | Earthworks | Castell Moel Motte, Llangain | Greencastle | Carmarthenshire | Cropmarks/slight earthworks | Castell Nos, Aberdare | Castelle Nose | Glamorgan | Earthworks | Castell Pant-Mawr, Llanilar | Coed y Castell | Cardiganshire | Earthworks | Castell Pengawsai | Llangolman; Blaenllechog | Pembrokeshire | Earthworks | Castell Pistog | Bangor | Cardiganshire | Cropmarks/slight earthworks | Castell Poeth | Llanwnda | Pembrokeshire | Earthworks | Castell Pridd, Penbryn | Cardiganshire | Nothing visible | Castell Trefadog | Porth Trefadog | Anglesey | Earthworks | Castell y Blaidd, Llanbadarn Fynydd | Wolfs Castle | Radnorshire | Earthworks | Castell y Garreg, Gorslas | Castle of Lle Gareig; Luchewein; Lychewein; Caer Castell | Carmarthenshire | Nothing visible | Castell y Rhingyll | Lychewein; Luchewein | Carmarthenshire | Cropmarks/slight earthworks | Castle Arnold, Llangattock nigh Usk | Castle Arnault; Castell Arnallt | Monmouthshire | Cropmarks/slight earthworks | Castle Hill Placename, Tregynon | Montgomeryshire | Nothing visible | Castle in Gwerthrynion | Radnorshire | Uncertain | Castle Morris | Castell Maurice; Pen-cnwc; Casmorys; Castlemorris | Pembrokeshire | Nothing visible | Castle Pill, Milford | Blackbridge; Steyton | Pembrokeshire | Cropmarks/slight earthworks | Castle Ring, Begelly | Bottom Farm | Pembrokeshire | Nothing visible | Castle Villa, Brawdy | Castle Gwilym; Cas Wilia; Castle-y-Cymry; Castell Willia; Castell Wilym | Pembrokeshire | Earthworks | Castlebythe | Castell y Bwch | Pembrokeshire | Earthworks | Castlemartin Castle | Court Castle; Martine Castell; Castro Martini | Pembrokeshire | Earthworks | Cefn Barn Ringwork, Trefeca Fawr | Trefecca Fawr; Trefeca-fawr; Cefn Bank; Weynards Castle; Waynards castle; Castellum Waynardi | Brecknockshire | Masonry foundations | Cefn Du Motte, Guilsfield | Montgomeryshire | Earthworks | Cefn Llech Enclosure | Cwm y Saeson; Dulas | Radnorshire | Earthworks | Chepstow Park Wood Earthwork, Devauden | Monmouthshire | Earthworks | Cil Ifor Top, Llanrhidian | Cil Ivor Camp | Glamorgan | Earthworks | Clawyd British Motte | Clawdd Brythonig; Llandeilor-fan | Brecknockshire | Earthworks | Clyn Pattel Mound | Crinow Castle; Green Castle; Glynpatel | Pembrokeshire | Earthworks | Coed Caeau, Waun Gunllwch | Crucadarn; Guan Gunllwch; Crickadarn | Brecknockshire | Earthworks | Coed Ty Mawr, Llanafanfawr | Pen Cae Gaer | Brecknockshire | Earthworks | Coed y Cra Uchaf Mound, Halkyn | Flintshire | Uncertain | Coed y Fedw Tump | Dingestow | Monmouthshire | Uncertain | Corwen | Merioneth | Uncertain | Cottrell Motte | Cottrell Park Motte | Glamorgan | Earthworks | Crogen Motte, Llandderfel | Croegen; Cregan | Merioneth | Uncertain | Cwm Clais, Castell Bolan | Baglan; Cwm Glais | Glamorgan | Earthworks | Cwrt y Gaer Ringwork, Wolvesnewton | Monmouthshire | Earthworks | Denbigh Old Castle, Crown Hotel Mount | Dinebech; Dinbech; Timbei | Denbighshire | Nothing visible | Dinas Island Castell | Cwm-yr-Eglwys | Pembrokeshire | Earthworks | Dingstopple, Llawhaden | Pembrokeshire | Earthworks | Domen Gastell, Llandrinio | Tomen Gastell | Montgomeryshire | Earthworks | Drim Castle, Llawhaden | Drum Castle; Castell y Drim | Pembrokeshire | Earthworks | Dunns Lane Motte, Evenjobb | Radnorshire | Earthworks | Erw'r Castell Mound, Caerwys | Flintshire | Earthworks | Evancoyd Mound | Evenjobb 4; Evenjobb House; Newcastle | Radnorshire | Cropmarks/slight earthworks | Evanjobb Motte | Evenjobb | Radnorshire | Cropmarks/slight earthworks | Felin Cwrrws, Llandyfroig | Felin Cwrrs; Felin Cwrws; Henllan | Cardiganshire | Earthworks | Fforest Castle | Llanlleonfel; Dol-Aeron; Fforest Twdin; Caer Aeron | Brecknockshire | Earthworks | Ford Motte, Beguildy | Radnorshire | Uncertain | Gaer, Llandygwydd | Cardiganshire | Earthworks | Garn y Castell Motte | Weynards Castle; Waynards castle; Castellum Waynardi; Carnycastell | Brecknockshire | Cropmarks/slight earthworks | Glan Mynys Mount | Llanwrda Castle | Carmarthenshire | Earthworks | Glasbury Motte | Radnorshire | Cropmarks/slight earthworks | Goytre Wood Motte | Castell Goetre; Gwern Castle; Great Goytre | Monmouthshire | Earthworks | Graig Foel, Llanbadoc | Monmouthshire | Earthworks | Graig Wood, Caerleon | Caerllion; Llantarnam; Graig-yr-Eurych; Colstar; Craig Wood | Monmouthshire | Earthworks | Great Castle Head, Dale | Pembrokeshire | Earthworks | Hen Domen, Llansantffraid Deuddwr | Coed Mawr | Montgomeryshire | Earthworks | Horn Castle Placename, Rhos-goch | Radnorshire | Nothing visible | Howe Mill Enclosure | How Mill; St Mary's Castle | Glamorgan | Earthworks | Kinnerton Court Motte | Radnorshire | Earthworks | Knapp Farm Mound | Old Radnor; Maes Hyfaidd; Knap | Radnorshire | Earthworks | Leeswood Hall Mound, The Mount | Mold Rural | Flintshire | Earthworks | Little Newcastle | Pembrokeshire | Nothing visible | Llanddowror Motte | Carmarthenshire | Earthworks | Llandefaelog Fach Motte | Llandyfaelog; Llandefaelog House Motte | Brecknockshire | Earthworks | Llandow Castle | Glamorgan | Cropmarks/slight earthworks | Llandre Egremont | Llandre Gaer; Y Gaer; Moat Llandre Bridge | Carmarthenshire | Earthworks | Llandyssil Bridge Mound | Montgomeryshire | Earthworks | Llangewydd Castle, Laleston | Llangenydd | Glamorgan | Nothing visible | Llanglydwen | Carmarthenshire | Nothing visible | Llangwathen Motte | Pembrokeshire | Earthworks | Lleiniog near Penmon | Anglesey | Earthworks | Llwynduris Castle Mound | Llandygwydd; Parc y Castell; Llwyndyris; Henllys | Cardiganshire | Earthworks | Llys Gwenllian | Llanrhaiadr yn Cinmerch | Denbighshire | Earthworks | Long Furze, Amroth | Earwere; Castle Park; Erwer; Eare Weare; Amroath; Ambroth; Amboth | Pembrokeshire | Earthworks | Maes Gwyn, Pentrefoelas | Denbighshire | Cropmarks/slight earthworks | Maindee Camp | Casnewydd; Newport | Monmouthshire | Cropmarks/slight earthworks | Manian Fawr, St Dogmaels | Cardiganshire | Earthworks | Martletwy | Pembrokeshire | Earthworks | Middlecross Ringwork, Llancarfan | Crosstown; Pancross | Glamorgan | Cropmarks/slight earthworks | Minwear Ringwork | Pembrokeshire | Earthworks | Moat Meadow, East Williamston | Pembrokeshire | Nothing visible | Mount Hely, Glascwm | Brynllys Castle | Radnorshire | Nothing visible | Nant yr Arian Castle | Old Goginan Castle; Castell Goginan | Cardiganshire | Nothing visible | Nantperchellan | St Dogmaels; Nan Perchellan | Cardiganshire | Earthworks | Neuadd, Llandrindod Wells | Noyadd | Radnorshire | Earthworks | Newport Old Castle | Long Street; Trefdraeth; Hen Gastell | Pembrokeshire | Earthworks | North Hill Tor, Cheriton | Glamorgan | Earthworks | Norton Camp, Oxwich | Glamorgan | Earthworks | Parc Castell, Scleddau | Castell Fartin; Maenorowen; Castlemartin; Manorowen | Pembrokeshire | Earthworks | Parc Castell, St Nicholas | Pembrokeshire | Earthworks | Parc Moat, Letterston | Littardiston; Trelettert | Pembrokeshire | Nothing visible | Parc y Marl Rath | Llys y Fran | Pembrokeshire | Cropmarks/slight earthworks | Pen Llys Ringwork | Llysdinam | Brecknockshire | Earthworks | Pen y Castell, Garreg Olau | Caer Oleu | Caernarfonshire | Masonry foundations | Pen y Castell, Llanilar | Garth Grugyn | Cardiganshire | Earthworks | Pen y Clawdd Castle, Crucorney | Llantilio Pertholey; Penyclawdd Court | Monmouthshire | Earthworks | Pencastell, Llangeler | Castell Mair; Capel Mair | Carmarthenshire | Earthworks | Penycastell, Eithin-gleision | Upper Lledrod; Pen y Castell | Cardiganshire | Earthworks | Plas Cadwgan Mound | Cadwgan Hall Mound | Denbighshire | Earthworks | Plas yn Dinas, Llansantffraid | Montgomeryshire | Earthworks | Pont Estyll Ringwork, Dan y Cefn | Llanspyddid; Llansbyddyd; Bolgoed | Brecknockshire | Cropmarks/slight earthworks | Powis Middle Park Mound | Pola; Pole; Pool; Trallwng | Montgomeryshire | Earthworks | Rhyd y Gors, Llangunnor | Banc y Castell; Rhydygors | Carmarthenshire | Nothing visible | Rhysnant Hall Motte | Montgomeryshire | Cropmarks/slight earthworks | Rockfield Castle, Llangattock Vibon Avel | Monmouthshire | Cropmarks/slight earthworks | Rockfield Farm Motte, Llangwm Isaf | New House | Monmouthshire | Earthworks | Rogerstone Castle | Tribginlion; Castell Gwilym; William’s Castle | Monmouthshire | Cropmarks/slight earthworks | Rosemarket Rath | Pembrokeshire | Earthworks | Rudbaxton Rath | Rhos; Simons Castle; St Leonards Rath | Pembrokeshire | Cropmarks/slight earthworks | Rug Park Motte | Dernio | Merioneth | Earthworks | Ruthin Old Castle | Rhuthun; Ruffin; Ruthlan | Denbighshire | Nothing visible | St Harmon Church Mound | St Garmon | Radnorshire | Nothing visible | St Marys Old Church Motte | Llanfair Treflygen; Llandyfriog Castle | Cardiganshire | Earthworks | Stormy Castle, Cynnig | Tythegston Higher; Sturmieston; villa sturmi | Glamorgan | Earthworks | Talley Mound | Carmarthenshire | Earthworks | Tomen Cefn Glaniwrch, Llanrhaeadr ym Mochnant | Cefn Uchaf; Trefeilw; Hendomen | Denbighshire | Earthworks | Tomen Madoc Motte, Kerry | Montgomeryshire | Earthworks | Tomen Rhyd Owen, Llandysul | Cardiganshire | Earthworks | Tower House Mound, Llangollen | Denbighshire | Earthworks | Tre Fedw; The Moat | Treveddw; Trefeddw; Coucorney Fawr; Bwlch Trewen | Monmouthshire | Earthworks | Trefecca Motte, Trefeca | Weynards Castle; Waynards castle; Castellum Waynardi | Brecknockshire | Earthworks | Trewern Mound | Alretone; Auretone; Averetone | Montgomeryshire | Earthworks | Troed yr Harn Motte | Ty'n y Caeau; Ty'n y Caernau; Alexanderstone Motte | Brecknockshire | Cropmarks/slight earthworks | Trostrey Castle | Monmouthshire | Earthworks | Truemans Hill, Hawarden | Flintshire | Earthworks | Twyn Bell Camp, Llanbadoc | Monmouthshire | Earthworks | Twyn y Garth, Llandelio Graben | Radnorshire | Earthworks | Ty Du, Pendoylan | Glamorgan | Earthworks | Ty Mawr, Llanrhystyd | Cardiganshire | Uncertain | Tyddyn Mount | Mold Rural; Tyddin | Flintshire | Earthworks | Tyn Twr | Llanllechid | Caernarfonshire | Cropmarks/slight earthworks | Walterston Castle | Glamorgan | Earthworks | Waun Ddu, Myddfai | Y Pigwrn | Carmarthenshire | Earthworks | Waun Tympath | Penbre; Twmpath, Cwm Ferman | Carmarthenshire | Earthworks | Wentloog Castle | Castleton; Wentlloog; Castell Coch; Castell Behan; Remmi; Remni | Monmouthshire | Earthworks | Wern y Cwrt Motte, Bryngwyn | Monmouthshire | Earthworks | Y Castell, Llys y Fran | Llysyfran | Pembrokeshire | Nothing visible | Y Gaer, Manor Pound, Maenclochog | Pembrokeshire | Nothing visible | Ynyscrug Castle, Trealaw | Rhondda; Ynys y Crug; Hangman's Hill; Gibbet Hill; Tonypandy | Glamorgan | Cropmarks/slight earthworks |
| Aberyscir Ringwork | Brecknockshire | Earthworks | |
| Afon Marteg Mount | The Mount, Maes Gwaelod; Bedd Garmon | Radnorshire | Earthworks |
| Allt Ogofau, Dolaucothi | Gogofau; Ogofau Lodge | Carmarthenshire | Earthworks |
| Bailey Farm, Llangunllo | Llangynllo; Penbeili | Radnorshire | Earthworks |
| Battle Tump, Llanelly | Brecknockshire | Uncertain | |
| Belan Farm Castle Placename, Llangurig | Montgomeryshire | Nothing visible | |
| Boat Inn Mound, Llandeilo Graban | Radnorshire | Earthworks | |
| Braich y Dinas | Caernarfonshire | Earthworks | |
| Brigam Farm | Breigam | Glamorgan | Nothing visible |
| Brocastle | Llangan | Glamorgan | Nothing visible |
| Bromfield Castle | Denbighshire | Nothing visible | |
| Broney Castle, Llansilin | Denbighshire | Nothing visible | |
| Bryn Llyn Mound | Brynllwyn Farm | Montgomeryshire | Earthworks |
| Bryn Llys, Glascwm | Radnorshire | Nothing visible | |
| Bryn yr Erye Enclosure | Merioneth | Uncertain | |
| Bryn-ffanigl Uchaf 2 | Denbighshire | Earthworks | |
| Cae Castell Fieldname and Ysgwennant round barrow | Denbighshire | Nothing visible | |
| Cae Castell Placename, Llanafanfawr | Brecknockshire | Nothing visible | |
| Cae Castell Placename, Llywel | Brecknockshire | Nothing visible | |
| Cae Dan y Domen Placename, Bronllys | Brecknockshire | Earthworks | |
| Cae Dan y Domen Placename, Treflys | Brecknockshire | Earthworks | |
| Cae Dan y Domen Placename, Ystradgynlais | Brecknockshire | Earthworks | |
| Cae Domen Mound, Llandinam | Montgomeryshire | Nothing visible | |
| Cae Domen Placename, Llandinam | Montgomeryshire | Earthworks | |
| Cae Dommen Fawr, Clydey | Pembrokeshire | Nothing visible | |
| Cae Dommen, Llanddeusant | Carmarthenshire | Earthworks | |
| Cae Gaer | Carmarthenshire | Earthworks | |
| Cae Gawr Placename, Llandrinio | Montgomeryshire | Earthworks | |
| Cae Mount Fieldname | Fflint | Flintshire | Nothing visible |
| Cae Tan Tomen and Fron Garnedd Placenames, Llanfair Caereinion | Montgomeryshire | Nothing visible | |
| Cae Twmpath Fieldname 2, Coedpoeth | Llidart Fanny Farm | Denbighshire | Nothing visible |
| Cae Twmpath Fieldname, Coedpoeth | Denbighshire | Nothing visible | |
| Cae Wall Wood Motte, Langstone | Pool Head Motte | Monmouthshire | Earthworks |
| Caer Dommon Mound, Llangamarch | Brecknockshire | Nothing visible | |
| Caer Fach Fieldname, Llanrhaeadr ym Mochnant | Denbighshire | Earthworks | |
| Caer Fach, Cribyn | Cardiganshire | Earthworks | |
| Caer Licyn | Kemeys Inferior; Gaer Licyn | Monmouthshire | Earthworks |
| Caersws Castle | Caer-Sws | Montgomeryshire | Nothing visible |
| Carreg Pumsant, Dolaucothi | Gogofau; Penlan Wen | Carmarthenshire | Earthworks |
| Castell Bach Placename, Glantwymyn | Montgomeryshire | Nothing visible | |
| Castell Dinas, Dinas Cross | Bwlch Mawr | Pembrokeshire | Earthworks |
| Castell Du Placename, Llywel | Brecknockshire | Nothing visible | |
| Castell Gwyddgrug | Gwyddgwg; Guiddgrug | Carmarthenshire | Cropmarks/slight earthworks |
| Castell Llwyn Gwinau | Llwyn-Gwynau | Cardiganshire | Earthworks |
| Castell Olwen, Lampeter | Cardiganshire | Earthworks | |
| Castell Pant Y Fen | Carmarthenshire | Earthworks | |
| Castell Placename, Nercwys | Flintshire | Nothing visible | |
| Castell Prin | Castell Pren Wood | Monmouthshire | Earthworks |
| Castell Rhosesmor, Halkyn | Flintshire | Uncertain | |
| Castell Wladus, Pencaer | Castell cleddau; Castell Cleddyf, Y Castell | Pembrokeshire | Cropmarks/slight earthworks |
| Castle Ely, Eglwyscummin | Cyffic; Parc y Twmp, Castell Heli; Castell Park | Carmarthenshire | Earthworks |
| Castle Hill Placename, Guilsfield | Montgomeryshire | Nothing visible | |
| Castle Hill Placename, Llandinam | Montgomeryshire | Nothing visible | |
| Castle Placename, Glynfach | Brecknockshire | Earthworks | |
| Castles Bay Camp | Pembrokeshire | Earthworks | |
| Cefn y Coed Mound, Llanafanfawr | Brecknockshire | Nothing visible | |
| Coed Allt y Tywood Mound | Castell Ty Maen | Flintshire | Earthworks |
| Connahs Hey Mound | Connah's Hill | Flintshire | Uncertain |
| Creigiau Earthwork | Glamorgan | Uncertain | |
| Crug y Whil, Llanwenog | Crug y chwil | Cardiganshire | Uncertain |
| Crugiau Edryd | Crugerydd; Llanbydder | Carmarthenshire | Cropmarks/slight earthworks |
| Crugyn Dimai, Llanfarian | Lower Llanabadarn y Creuddyn | Cardiganshire | Earthworks |
| Cwm Mound, Llansantffraed in Elvel | Garn Fach | Radnorshire | Nothing visible |
| Cyrnau Castell, Llanddewi Brefi | Cyrnau; Brobwll | Cardiganshire | Nothing visible |
| Danylan Mound, Llyswen | Brecknockshire | Earthworks | |
| Dinas Cadnant | Anglesey | Earthworks | |
| Drim Camp, Llawhaden | Pembrokeshire | Cropmarks/slight earthworks | |
| Ffynogion Earthwork | Denbighshire | Nothing visible | |
| Garn Coch Motte | Brecknockshire | Cropmarks/slight earthworks | |
| Garth Enclosure, Nantmel | Radnorshire | Earthworks | |
| Gors Enclosure | Denbighshire | Earthworks | |
| Graig Fawr, Dyserth | Flintshire | Uncertain | |
| Grugyn Llawr Llan Mound, St Harmon | Radnorshire | Uncertain | |
| Grugyn Mound, St Harmon | Radnorshire | Earthworks | |
| Guanceste | Gwaunceste; Bryn y Maen | Radnorshire | Cropmarks/slight earthworks |
| Gwenthriew Enclosure, Kerry | Great Cloddian Enclosure; Great Cloddiau | Montgomeryshire | Earthworks |
| Gwerglodd y Domen Placename, Llanfihangel | Montgomeryshire | Nothing visible | |
| Hean Castle | Hen Gastell | Pembrokeshire | Earthworks |
| Hen Caerau, West Cilrhedyn | Pembrokeshire | Cropmarks/slight earthworks | |
| Hen Gastell, Llanrhidian Higher | Hen Castell; Dan-y-lan Camp; Pen-clawdd | Glamorgan | Uncertain |
| Hendom Mound, Corwen | Merioneth | Earthworks | |
| Hendre Hafaidd Ringwork, Llanddewi Rhydderch | Hendre Hadaidd; Cae Moat Camp | Monmouthshire | Cropmarks/slight earthworks |
| Lampeter Church Mound | Cardiganshire | Nothing visible | |
| Llanllowel Castle | Monmouthshire | Nothing visible | |
| Llanmelin Wood Lesser Enclosure | Monmouthshire | Earthworks | |
| Llantrisant Fawr Castle | Monmouthshire | Nothing visible | |
| Lle'r Prior Earthwork, Llanafanfawr | Llanafan Fawr | Brecknockshire | Earthworks |
| Llowes Castle Tump | Radnorshire | Earthworks | |
| Llyn Gwyn Enclosure | Treflyn | Radnorshire | Earthworks |
| Maes y Castell, Taliaris | Carmarthenshire | Earthworks | |
| Mellington Hill Mound | Boot Hill | Montgomeryshire | Earthworks |
| Mount Vernon Motte | Vernon House | Glamorgan | Earthworks |
| Mynydd Morvil | Pembrokeshire | Cropmarks/slight earthworks | |
| Newton Mount Meadow, Llanstadwell | Pembrokeshire | Uncertain | |
| North Hill, Angle | Pembrokeshire | Nothing visible | |
| Oakley Arms | Maentwrog; Mayn Turroc; Ffestiniog | Merioneth | Earthworks |
| Oldcastle, Crucorney | Monmouthshire | Earthworks | |
| Padeswood Mound, Leeswood | Mold Rural; Bryn y Castell | Flintshire | Earthworks |
| Pant y Cadno, Llandisilio West | Llandysilio West; Pant-y-cadnaw | Pembrokeshire | Cropmarks/slight earthworks |
| Parc y Castell | Llandygwydd | Cardiganshire | Cropmarks/slight earthworks |
| Parc-Yr-Hen Gastell | Castell Llain Mabws | Pembrokeshire | Nothing visible |
| Park Mill, Ilston | Liston | Glamorgan | Cropmarks/slight earthworks |
| Pen y Castell, Kerry | Huberts Folly; Stultita Huberti; Pen Castle | Montgomeryshire | Earthworks |
| Pier Camp, Bangor | Caernarfonshire | Cropmarks/slight earthworks | |
| Pytindu Motte | Peytin-du; Pytin-du | Brecknockshire | Nothing visible |
| Pytingwyn Motte | Brecknockshire | Nothing visible | |
| Reynoldston Camp | Reynoldstone | Glamorgan | Earthworks |
| Rhiwderin Camp | Rhiwderyn; Cae Tumpyn ring | Monmouthshire | Earthworks |
| Rhos Domen Placename, Banwy | Montgomeryshire | Nothing visible | |
| Stradmore Motte | Cardiganshire | Earthworks | |
| Tir Bach, Cilcennin | Cardiganshire | Earthworks | |
| Tomen y Castell, Gwyddelwern | Merioneth | Cropmarks/slight earthworks | |
| Tre Domen Mound, Llanbedr Ystradwy | Brecknockshire | Earthworks | |
| Treowen Ringwork, Mitchel Troy | Monmouthshire | Earthworks | |
| Tump Farm Placename, Clyro | Radnorshire | Nothing visible | |
| Twmpath Chwrall Fieldname, Tremeirchion | Flintshire | Nothing visible | |
| Twmpath Placename, Treuddyn | Flintshire | Uncertain | |
| Twmpath, New Moat | Pembrokeshire | Nothing visible | |
| Twthill, Caernarfon | Caernarfonshire | Uncertain | |
| Tynewydd Mound, Leeswood | Flintshire | Earthworks | |
| Upper Pen y Clawdd Ringwork | Monmouthshire | Cropmarks/slight earthworks | |
| Vianshill, St Lythans Down | Glamorgan | Earthworks | |
| Vortigern Castle, Pistyll | Nant Gwrtheirn | Caernarfonshire | Uncertain |
| Waun y Caerau Placename | Radnorshire | Nothing visible | |
| White Grit Enclosure, Priest Weston | Miner's Arm | Montgomeryshire | Cropmarks/slight earthworks |
| Winllan Enclosure, Llansantffraid | Montgomeryshire | Earthworks | |
| Ynys Cefni, Llangefni | Anglesey | Earthworks | |
| Ysgubor Gaer, Pencaer | Pembrokeshire | Earthworks | |
| Ysgubor Wen Motte | Glamorgan | Earthworks | |
| Aberhafesp Hall Mound | Montgomeryshire | Earthworks | |
| Allt yr Esgair Enclosure | Brecknockshire | Earthworks | |
| Banc Glyn Gyrnant Enclosure | Brecknockshire | Uncertain | |
| Banc Mawr, Llannon | Cefn y Bryn | Carmarthenshire | Uncertain |
| Bangor Castle | Caernarfonshire | Nothing visible | |
| Bank Farm Enclosure, Berriew | Ffridd Penthryn | Montgomeryshire | Cropmarks/slight earthworks |
| Bedford Castle | Glamorgan | Earthworks | |
| Beili-Bedw, Llanddeusant | Beily Bedw | Carmarthenshire | Earthworks |
| Berry Wood Earthwork | Glamorgan | Nothing visible | |
| Black Wood Mound, Berriew | Montgomeryshire | Earthworks | |
| Bridge End Inn Mound | Brecknockshire | Cropmarks/slight earthworks | |
| Bryn Maen Caerau | Bryn Cynon Enclosure, Cellan | Cardiganshire | Earthworks |
| Bryn Rhydd Enclosure | Brynrhydd; Bryn yr Hydd Common | Radnorshire | Earthworks |
| Brynhyfryd Mound | Montgomeryshire | Nothing visible | |
| Burry Hall, Port Eynon | Bury Hall; Berry Wood | Glamorgan | Nothing visible |
| Cae Domen Placename, Llanafanfawr | Brecknockshire | Nothing visible | |
| Cae Domen Placename, Llanwddyn | Montgomeryshire | Earthworks | |
| Cae Domen Placename, Newton | Montgomeryshire | Nothing visible | |
| Cae Domen Placename, Trallong | Brecknockshire | Nothing visible | |
| Cae Fan Domen, Abbey Cwmhir | Radnorshire | Earthworks | |
| Cae Twmpan Placename, Llangenny | Brecknockshire | Nothing visible | |
| Cae Twmpin Placename, Beusych | Brecknockshire | Earthworks | |
| Cae Twmpin Placename, Llangors | Brecknockshire | Nothing visible | |
| Cae Twmpin Placename, Maesmynis | Brecknockshire | Earthworks | |
| Cae Twmpin Placename, Merthyr Cynog | Brecknockshire | Nothing visible | |
| Cae Twmpin Placename, Trallong | Brecknockshire | Earthworks | |
| Cae Twpin Placename, Llanafanfechan | Brecknockshire | Nothing visible | |
| Cae'r Castell Placename, Ystradgynlais | Brecknockshire | Earthworks | |
| Camen Mound | Montgomeryshire | Uncertain | |
| Castell Bugad | Cardiganshire | Earthworks | |
| Castell Caerwen | Castell Kilkiffeth; Llanychaer | Pembrokeshire | Earthworks |
| Castell Crov, Bettws Newydd mound | Monmouthshire | Earthworks | |
| Castell Fflemish | Llanbadarn-Odwyn | Cardiganshire | Earthworks |
| Castell Waun-Withan | Carmarthenshire | Uncertain | |
| Castell y Fran, Bletherston | Pembrokeshire | Earthworks | |
| Castell, Solva | Y castell; Henre Ruffydd | Pembrokeshire | Earthworks |
| Castle Tump mound, Llanbadarn Fynydd | Radnorshire | Earthworks | |
| Cegin Fedw Mound, Llanrhaeadr ym Mochnant | Denbighshire | Earthworks | |
| Ceunant Mound, Llanrhaeadr ym Mochnant | Caenant | Denbighshire | Nothing visible |
| Chester Street Mound | Fflint | Flintshire | Nothing visible |
| Ciddig Barrow, Llanwddyn | Montgomeryshire | Earthworks | |
| Clyro Hill Tump Placename, Clyro | Radnorshire | Nothing visible | |
| Collfryn Mound | Boncyn y Gwilliad; Cemmes | Montgomeryshire | Uncertain |
| Counsel Tut, Cowbridge | Council Twt | Glamorgan | Uncertain |
| Craig Ty Isaf Camp | Glamorgan | Earthworks | |
| Crawley Rocks Fort, Nicholaston | Glamorgan | Earthworks | |
| Crugyn Tump, Beguildy | Bugeildy | Radnorshire | Uncertain |
| Crungoed Wood, Llangunllo | Radnorshire | Earthworks | |
| Cwm Bach Mound, Gwenddwr | Brecknockshire | Earthworks | |
| Cwrt Llechrhyd, Llanelwedd | Cwrt Llechryd | Radnorshire | Earthworks |
| Deepweir Tump | Dewstow | Monmouthshire | Uncertain |
| Dol y Canney Mound | Bryngwyn | Radnorshire | Uncertain |
| Gadlys, Llanilid | Glamorgan | Earthworks | |
| Gaer Noddfa, Carno | Montgomeryshire | Uncertain | |
| Garth Rhiwaedog | Merioneth | Cropmarks/slight earthworks | |
| Gelli Garn Castle | Glamorgan | Uncertain | |
| Glan Hafren Ringwork | Montgomeryshire | Uncertain | |
| Gwerclas | Llangar, The Mount | Merioneth | Cropmarks/slight earthworks |
| Hafod y Bwch | Denbighshire | Earthworks | |
| Hook Tump | Pembrokeshire | Uncertain | |
| Horgrove Enclosure | Glamorgan | Uncertain | |
| Kittle Top, Penrice | Glamorgan | Cropmarks/slight earthworks | |
| Leason | Leyston | Glamorgan | Earthworks |
| Llanddewi Enclosure, Port Eynon | Glamorgan | Earthworks | |
| Llantrithyd Camp | Llantrithyd House; Llantrythyd Ringwork | Glamorgan | Masonry foundations |
| Llechryd Earthwork | Llechrhyd | Montgomeryshire | Earthworks |
| Llethrau Camp | Radnorshire | Earthworks | |
| Llysin Hillfort | Llyssin | Radnorshire | Earthworks |
| Lower Fawnog Mound | Pentre llaeth enwyn; Pentre Buttermilk | Montgomeryshire | Uncertain |
| Maes Hywaid Motte, Welsh St Donats | Glamorgan | Earthworks | |
| Maes Mynan Mound | Maesmaenan; Aberwhiler; Coed Maesmynan | Denbighshire | Nothing visible |
| Maes y Domen mound | Montgomeryshire | Nothing visible | |
| Maes y Garn Mound, Llanwern | Brecknockshire | Earthworks | |
| Maesgwyn mound | Gogia; Llowes | Radnorshire | Earthworks |
| Maesmor Hall Castle Mound, Llangwm | Tomen Maesmor; Y Domen; Maerdy; Llandderfel | Denbighshire | Earthworks |
| Maesteg Mound | Montgomeryshire | Nothing visible | |
| Moel Hywel Barrow, St Harmon | Radnorshire | Nothing visible | |
| Moel Part mound, Banwy | Montgomeryshire | Uncertain | |
| Mound, Llansamlet | Mynydd Drumau | Glamorgan | Earthworks |
| Mount Mound, Llananno | Radnorshire | Cropmarks/slight earthworks | |
| Mynydd Cilciffeth, Cwm Gwaun | Pembrokeshire | Uncertain | |
| Mynydd Y Fforest Earthwork | Glamorgan | Earthworks | |
| Nant Fagl Mound, Llanrhaiadr ym Mochnant | Castell Moch; Castellmoch | Montgomeryshire | Uncertain |
| Nant Y Baedd Mound | Llanganten Mound | Brecknockshire | Earthworks |
| Nash Mound | Glamorgan | Earthworks | |
| Nash Point Old Castle | Nash Point Camp | Glamorgan | Earthworks |
| Neuadd Wen Mound | Montgomeryshire | Uncertain | |
| Old Church Stoke Castle Ring | Montgomeryshire | Cropmarks/slight earthworks | |
| Old Radnor Castle | The Castle | Radnorshire | Earthworks |
| Pant y colin | Pantycollin; Pant-y-colie; Pant-y-celyn | Monmouthshire | Uncertain |
| Panteg Motte | Rectory | Monmouthshire | Nothing visible |
| Pantycaregl | Pant y Caregl | Radnorshire | Earthworks |
| Pen Isa'r Pentre Enclosure, Llanfilo | Penishapentre | Brecknockshire | Cropmarks/slight earthworks |
| Pen Sarn Earthwork, Llansantffraid | Montgomeryshire | Uncertain | |
| Pen Twr Enclosure, Treflys | Cwm Cowydd; Cefn Gardys | Brecknockshire | Earthworks |
| Pen Vain Mound | Pontvane | Radnorshire | Earthworks |
| Pen y bylchau | Carmarthenshire | Uncertain | |
| Pen y Castell, Cynnig | Kibor Castle; Castellum Kibur: Castelstude | Glamorgan | Earthworks |
| Penlan Mound, Llanbister | Penland | Radnorshire | Earthworks |
| Pentre Mound, Llandrindod Wells | Radnorshire | Earthworks | |
| Pont Mathrafal Mound | Cae Bancau | Montgomeryshire | Earthworks |
| Rhiwau Mound, New Radnor | Rhewey | Radnorshire | Earthworks |
| Rhuallt mound | Flintshire | Earthworks | |
| Roath Dogfield | Roath Court; Roath Dogfilde | Glamorgan | Nothing visible |
| Romans Castle | Ramus Castle; Roman Castle | Pembrokeshire | Earthworks |
| Scrape Cottage Mound | Flintshire | Earthworks | |
| Sinadon | Snowdon; Smardon; Sinnodune; Castell Caer Lleion; Castell Caer Seion | Caernarfonshire | Earthworks |
| St Lythans Ringwork | Coednant Bran | Glamorgan | Earthworks |
| Stanlo Tump Mound | Radnorshire | Earthworks | |
| Summerton Camp | Pembrokeshire | Earthworks | |
| Swansea; The Mount | Glamorgan | Nothing visible | |
| Tomen Bryn Dadlau Mound | Tomen Bryn Dadleu Mound | Montgomeryshire | Uncertain |
| Tongwynlais alleged motte | Eglwysilan | Glamorgan | Earthworks |
| Tredegar Fort, Gaer | Newport | Monmouthshire | Earthworks |
| Trwstllewelyn | Trwst Llewelyn | Montgomeryshire | Uncertain |
| Tump house mound, Glascwm | Radnorshire | Earthworks | |
| Tump Piece Placename, Llanbister | Radnorshire | Nothing visible | |
| Turla Mound | Twrla Mound; Glanyrannell, Glan-yr-annell; Talley | Carmarthenshire | Earthworks |
| Twiscob Moat, Whitton | Cascob; Ffossidoes | Radnorshire | Earthworks |
| Twmp Placename, Bronllys | Brecknockshire | Earthworks | |
| Twmpath Garmon | Montgomeryshire | Uncertain | |
| Twmpath Placename, Gwenddwr | Brecknockshire | Nothing visible | |
| Twmpin Placename, Llansantffraed | Brecknockshire | Earthworks | |
| Twyn Llewelyn Mound A | Glamorgan | Earthworks | |
| Twyn Llewelyn Mound B | Glamorgan | Earthworks | |
| Ucheldre Mound, Corwen | Ucheldref | Merioneth | Cropmarks/slight earthworks |
| Woodstock Ring, Ambleston | Ableston | Pembrokeshire | Earthworks |
| Ynysawdre Mound, St Brides Minor | Glamorgan | Earthworks |