Welsh Place Name List
Many historic sources, such as censuses, civil registration documents or wills may give different versions of a place name and be prepared for some strange spelling variations!
| Welsh Name | English Name |
|---|---|
| Aberafan | Aberavon |
| Abercynffig | Aberkenfig |
| Aberdâr | Aberdare |
| Aberdaugleddau | Milford Haven |
| Aberdyfi | |
| Abergwaun | Fishguard |
| Abermaw | Barmouth |
| Aberpennar | Mountain Ash |
| Aberhonddu | Brecon |
| Abertawe | Swansea |
| Aberteifi | Cardigan (town) |
| Arbeth | Narbeth |
| Bangor Is Y Coed | Bangor On Dee |
| Blaenafon | Blaenavon |
| Brychdyn | Broughton |
| Brynbuga | Usk |
| Bwcle | Buckley |
| Caerdydd | Cardiff |
| Caerfyrddin | Carmarthen |
| Caerffili | Caerphilly |
| Caergybi | Holyhead |
| Caernarfon | |
| Cas-gwent | Chepstow |
| Casnewydd | Newport (Gwent) |
| Castellnewydd Emlyn | Newcastle Emlyn |
| Castell-nedd | Neath |
| Cei Conna | Connah's Quay |
| Ceredigion or Sir Aberteifi | Cardiganshire |
| Chwitffordd | Whitford |
| Coed-duon | Blackwood |
| Coed Llai | Leeswood |
| Conwy | |
| Crucywel | Crickhowell |
| Cydweli | Kidwelly |
| Dinbych | Denbigh |
| Dinbych y Pysgod | Tenby |
| Erbistog | Erbistock |
| Eryri | Snowdonia |
| Glyn Ebwy | Ebbw Vale |
| Helygain | Halkyn |
| Llanandras | Presteigne |
| Llanbedr Pont Steffan | Lampeter |
| Llandrindod | Llandrindod Wells |
| Llanelwy | St. Asaph |
| Llanelli | |
| Llaneurgain | Northop |
| Llanfair-ym-muallt | Builth Wells |
| Llanfor | |
| Llanilltud Fawr | Llantwit Major |
| Llanisien | Llanishen |
| Llannerch Panna | Penley |
| Llanymddyfri | Llandovery |
| Llwchwr | |
| Maesyfed | New Radnor |
| Marchwiail | Marchwiel |
| Merthyr Tudful | Merthyr Tydfil |
| Mwynglawdd | Minera |
| Owrtyn | Overton |
| Penarlâg | Hawarden |
| Penfro | Pembroke |
| Pen-y-bont (ar Ogwr) | Bridgend |
| Ponciau | |
| Porthaethwy | Menai Bridge |
| Porthmadog | |
| Porth Tywyn | Burry Port |
| Rhaeadr | Rhayader |
| Rhaglan | Raglan |
| Rhiwabon | Ruabon (or |
| Rhuthun | Ruthin |
| Rhydaman | Ammanford |
| Rhymni | Rhymney |
| Trefaldwyn | Montgomery |
| Trefalun | Allington |
| Trefyclo | Knighton |
| Trefynwy | Monmouth |
| Trefdraeth | Newport (Pembrokeshire) |
| Treffynnon | Holywell |
| Trelawnyd | |
| Treorci | Treorchy |
| Tyddewi | St. David's |
| Wrecsam | Wrexham |
| Y Bers | Bersham |
| Y Bontfaen | Cowbridge |
| Y Drenewydd | Newtown |
| Y Felinheli | |
| Y Fenni | Abergavenny |
| Y Gelli | Hay-on-Wye |
| Yr Hôb | Hope |
| Y Trallwng | Welshpool |
| Y Waun | Chirk |
| Yr Wyddfa | Snowdon |
| Yr Wyddgrug | Mold |
| Ynys Enlli | Bardsey Island |
| Ynys Môn | (Isle of) Anglesey |