# List of standardised Welsh place-names in Powys

The list of standardised Welsh place-names, for places in Powys, is a list compiled by the Welsh Language Commissioner to recommend the standardisation of the spelling of Welsh place-names, particularly in the Welsh language and when multiple forms are used, although some place-names in English were also recommended to be matched with the Welsh. The list contains 407 entries, as of November 2023.
The list is based on recommendations provided by the Place-names Standardisation Panel, convened by the Commissioner, for expert advice on the standardisation of Welsh place-names. The panel bases their decisions on a set of guidelines (currently dating to June 2023), specific to Welsh settlement names (such as those of villages, towns, and cities) and topographic features (such as lakes, mountains and rivers). The panel does not cover house or building names, although similar principles could be applied to them or to names for new developments (for which the Commissioner offers their own advice to local authorities and housing developers). The panel may also have used additional guidelines.
The list was first published in 2018, and took years to put together. Upon creation, these lists were published under the Open Government Licence 3.0.

## List

| Recommended standardised names | Recommended standardised names | Not recommended names | Not recommended names | Type | Grid reference |
| Welsh | English | Welsh | English | Type | Grid reference |
| Abaty Cwm-hir | Abbey Cwm-hir | | Abbeycwmhir | Settlement | SO0571 |
| Aberbechan | Aberbechan | | | Settlement | SO1393 |
| Aberbrân | Aberbrân | | | Settlement | SN9829 |
| Abercegyr | Abercegyr | | Abercegir | Settlement | SH8001 |
| Aberclydach | Aberclydach | | Aber Village | Settlement | SO1021 |
| Aber-craf | Abercrave | Abercraf | | Settlement | SN8112 |
| Aberedw | Aberedw | | | Settlement | SO0747 |
| Abergwesyn | Abergwesyn | | | Settlement | SN8552 |
| Abergwidol | Abergwidol | | Abergwydol | Area | SH7902 |
| Aberhafesb | Aberhafesb | | Aberhafesp | Settlement | SO0692 |
| Aberhonddu | Brecon | | | Settlement | SO0428 |
| Aberhosan | Aberhosan | | | Settlement | SN8097 |
| Aberllynfi | Three Cocks | | | Settlement | SO1737 |
| Aber-miwl | Abermule | | | Settlement | SO1694 |
| Aber-nant | Aber-nant | | Abernant | Settlement | SO1797 |
| Aberriw | Berriew | | | Settlement | SJ1800 |
| Abertridwr | Abertridwr | | | Settlement | SJ0319 |
| Aberysgir | Aberysgir | | Aberyscir | Settlement | SN9929 |
| Adfa | Adfa | | | Settlement | SJ0501 |
| Allt y Main | Allt y Main | | Allt-y-Main | Topographical feature | SJ1615 |
| Alport | Alport | | | Settlement | SO2795 |
| Ardd-lin | Arddleen | Arddlin | | Settlement | SJ2515 |
| Barland | Barland | | | Settlement | SO2862 |
| Y Batel | Battle | | | Settlement | SO0030 |
| Belan | Belan | | | Settlement | SJ2004 |
| Beulah | Beulah | | | Settlement | SN9251 |
| Bleddfa | Bleddfa | | | Settlement | SO2068 |
| Bochrwyd | Boughrood | | | Settlement | SO1339 |
| Bontdolgadfan | Bontdolgadfan | | Bont Dolgadfan | Settlement | SH8800 |
| Y Bont-faen | Forge | | | Settlement | SN7699 |
| Y Bontnewydd-ar-Wy | Newbridge on Wye | | Newbridge-on-Wye | Settlement | SO0158 |
| Bronllys | Bronllys | | | Settlement | SO1435 |
| Bronnydd | Bronnydd | | | Settlement | SO2145 |
| Bryncynfelyn | Bryncynfelyn | | | Area | SJ2019 |
| Bryn-mawr | Bryn-mawr | | | Settlement | SJ2519 |
| Bugeildy | Beguildy | | | Settlement | SO1979 |
| Burlingjobb | Burlingjobb | | | Settlement | SO2558 |
| Bwlch | Bwlch | | | Settlement | SO1521 |
| Bwlchycibau | Bwlchycibau | | Bwlch-y-cibau | Settlement | SJ1717 |
| Bwlch-y-ddâr | Bwlch-y-ddâr | | | Settlement | SJ1622 |
| Bwlch-y-ffridd | Bwlch-y-ffridd | | | Settlement | SO0695 |
| Bwlchysarnau | Bwlchysarnau | | | Settlement | SO0274 |
| Caehopkin | Caehopkin | | | Settlement | SN8212 |
| Caer Beris | Caer Beris | | | Man-made feature | SO0250 |
| Caer Din | Caer Din | | | Man-made feature | SO2789 |
| Caer Du | Caer Du | | | Man-made feature | SO0559 |
| Caer Fawr | Caer Fawr | | | Man-made feature | SO0553 |
| Cae'r-bont | Cae'r-bont | | | Settlement | SN8011 |
| Caerhywel | Caerhywel | | | Settlement | SO2098 |
| Cae'r-lan | Cae'r-lan | | | Settlement | SN8012 |
| Caersŵs | Caersŵs | | Caersws | Settlement | SO0392 |
| Camnant | Camnant | | | Topographical feature | SO0956 |
| Capel Isaf | Lower Chapel | | | Settlement | SO0235 |
| Capel Uchaf | Upper Chapel | | | Settlement | SO0040 |
| Capel-y-ffin | Capel-y-ffin | | | Settlement | SO2531 |
| Carcwm | Carcwm | | | Topographical feature | SN8850 |
| Carmel | Carmel | | | Settlement | SO0566 |
| Carn Ricet | Carn Ricet | | | Man-made feature | SN8770 |
| Carn y Castell | Carn y Castell | | | Man-made feature | SO1529 |
| Carn y Geifr | Carn y Geifr | | | Man-made feature | SN9760 |
| Carnau Cefn-y-ffordd | Carnau Cefn-y-ffordd | | | Man-made feature | SN9560 |
| Carnedd | Carnedd | | | Settlement | SO0291 |
| Carnedd Wen | Carnedd Wen | | | Topographical feature | SH9209 |
| Carno | Carno | | | Settlement | SN9696 |
| Carreg Wen | Carreg Wen | | | Man-made feature | SN8288 |
| Casgob | Casgob | | Cascob | Settlement | SO2366 |
| Castell Caereinion | Castle Caereinion | | | Settlement | SJ1605 |
| Castell-paen | Painscastle | | | Settlement | SO1646 |
| Cathedine | Cathedine | | | Settlement | SO1425 |
| Cefn Mawr | Cefn Mawr | | | Topographical feature | SN7915 |
| Cefn-brith | Cefn-brith | | | Man-made feature | SH9800 |
| Cefn-brith | Cefn-brith | | | Man-made feature | SN9145 |
| Cefncanol | Cefncanol | | | Settlement | SJ2331 |
| Cefn-coch | Cefn-coch | | Cefn Coch | Settlement | SJ0402 |
| Cefngorwydd | Cefngorwydd | | | Settlement | SN9045 |
| Cefnllyfnog | Cefnllyfnog | | | Settlement | SJ1917 |
| Cefnpentre | Cefnpentre | | | Settlement | SJ1611 |
| Cefn-y-coed | Cefn-y-coed | | | Area | SO1993 |
| Cegidfa | Guilsfield | | | Settlement | SJ2212 |
| Cei’r Trallwng | Pool Quay | | | Settlement | SJ2511 |
| Ceinws | Ceinws | | | Settlement | SH7605 |
| Cemaes | Cemaes | | Cemmaes | Settlement | SH8306 |
| Ceri | Kerry | | | Settlement | SO1489 |
| Cerist | Cerist | | | Settlement | SN9688 |
| Cilcewydd | Cilcewydd | | | Settlement | SJ2204 |
| Cilmeri | Cilmeri | | | Settlement | SO0051 |
| Y Clas-ar-Wy | Glasbury | | | Settlement | SO1838 |
| Cleirwy | Clyro | | | Settlement | SO2143 |
| Cloddiau | Cloddiau | | | Settlement | SJ2009 |
| Cnwclas | Knucklas | | | Settlement | SO2574 |
| Coedway | Coedway | | | Settlement | SJ3414 |
| Coedybrenin | Kingswood | | | | SJ2402 |
| Coelbren | Coelbren | | | Settlement | SN8511 |
| Coldbrook | Coldbrook | | | Settlement | SO1536 |
| Colfa | Colfa | | | Settlement | SO2053 |
| Comins-coch | Comins-coch | | Commins Coch | Settlement | SH8403 |
| Cradoc | Cradoc | | | Settlement | SO0130 |
| Crai | Crai | | | Settlement | SN8924 |
| Cregrina | Cregrina | | | Settlement | SO1252 |
| Crew Green | Crew Green | | | Settlement | SJ3215 |
| Cross Oak | Cross Oak | | | Settlement | SO1023 |
| Crowther's Pool | Crowther's Pool | | | Settlement | SO2148 |
| Crucadarn | Crickadarn | | | Settlement | SO0842 |
| Crucywel | Crickhowell | | | Settlement | SO2118 |
| Crugion | Criggion | | | Settlement | SJ2915 |
| Cwm Belan | Cwm Belan | | | Settlement | SN9481 |
| Cwm-bach | Cwm-bach | | | Settlement | SO1639 |
| Cwmcrawnon | Cwmcrawnon | | | Settlement | SO1419 |
| Cwmgïedd | Cwmgïedd | | Cwmgiedd | Settlement | SN7811 |
| Cwmheiob | Cwmheyope | | | Settlement | SO2174 |
| Cwmlline | Cwmlline | | | Settlement | SH8407 |
| Cwm-rhos | Cwm-rhos | | | Settlement | SO1824 |
| Cwm-twrch Isaf | Lower Cwm-twrch | | Lower Cwmtwrch | Settlement | SN7610 |
| Cwm-twrch Uchaf | Upper Cwm-twrch | | Upper Cwmtwrch | Settlement | SN7511 |
| Cwmwysg | Cwmwysg | | | Settlement | SN8528 |
| Cwrtygollen | Cwrtygollen | | Cwrt-y-Gollen | Area | SO2317 |
| Dardy | Dardy | | | Settlement | SO2018 |
| Darowen | Darowen | | | Settlement | SH8201 |
| Defynnog | Defynnog | | | Settlement | SN9227 |
| Derwen-las | Derwen-las | | Derwenlas | Settlement | SN7299 |
| Diserth | Diserth | | | Settlement | SO0358 |
| Dolanog | Dolanog | | | Settlement | SJ0612 |
| Dolau | Dolau | | | Settlement | SO1467 |
| Doldowlod | Doldowlod | | | Settlement | SN9763 |
| Dolfor | Dolfor | | | Settlement | SO1087 |
| Dolgadfan | Dolgadfan | | | Area | SH8800 |
| Dolley Green | Dolley Green | | | Settlement | SO2865 |
| Dolycannau | Dolycannau | | | Settlement | SO2049 |
| Dolyronnen | Dolyronnen | | | Settlement | SH8300 |
| Domgae | Domgae | | | Settlement | SJ2819 |
| Y Drenewydd | Newtown | | | Settlement | SO1091 |
| Dutlas | Dutlas | | | Settlement | SO2177 |
| Dylife | Dylife | | | Settlement | SN8694 |
| Efail-rhyd | Efail-rhyd | | | Settlement | SJ1626 |
| Einsiob | Evenjobb | | | Settlement | SO2662 |
| Erwyd | Erwood | | | Settlement | SO0942 |
| Esgair Maen | Esgair Maen | | | Topographical feature | SN9978 |
| Esgairgeiliog | Esgairgeiliog | | | Settlement | SH7506 |
| Y Fan | Y Fan | | Van | Settlement | SN9487 |
| Felin Crai | Felin Crai | | | Settlement | SN8823 |
| Felindre | Felindre | | | Settlement | SJ1601 |
| Felin-fach | Felin-fach | | | Settlement | SO0933 |
| Felin-newydd | New Mills | | | Settlement | SJ0901 |
| Ffawyddog | Ffawyddog | | | Settlement | SO2018 |
| Ffordd-las | Ffordd-las | | | Settlement | SO2038 |
| Ffordun | Forden | | | Settlement | SJ2200 |
| Ffynnongynid | Ffynnongynid | | | Settlement | SO1641 |
| Frochas | Frochas | | | Settlement | SJ2910 |
| Garthbeibio | Garthbeibio | | | Settlement | SH9812 |
| Garthbrengi | Garthbrengi | | | Settlement | SO0433 |
| Garthmyl | Garthmyl | | | Settlement | SO1999 |
| Y Gelli Gandryll | Hay-on-Wye | | | Settlement | SO2242 |
| Geuffordd | Geuffordd | | | Settlement | SJ2114 |
| Geufron | Geufron | | | Settlement | SN9968 |
| Glangrwyne | Glangrwyne | | Glangrwyney | Settlement | SO2416 |
| Glan-miwl | Glan-mule | | Glanmule | Settlement | SO1690 |
| Glan-rhyd | Glan-rhyd | | | Settlement | SN7709 |
| Glantwymyn | Cemaes Road | | Cemmaes Road | Settlement | SH8204 |
| Glan-y-nant | Glan-y-nant | | | Settlement | SN9384 |
| Glasbwll | Glasbwll | | | Settlement | SN7397 |
| Glasgwm | Glasgwm | | | Settlement | SO1553 |
| Gleiniant | Gleiniant | | | Settlement | SN9791 |
| Glyntawe | Glyntawe | | | Settlement | SN8416 |
| Y Groes | Crossgates | | | Settlement | SO0864 |
| Groesffordd | Groesffordd | | | Settlement | SO0728 |
| Groes-lwyd | Groes-lwyd | | | Settlement | SJ2111 |
| Groespluen | Groespluen | | | Settlement | SJ2108 |
| Gurnos | Gurnos | | | Settlement | SN7709 |
| Gwaeddel | Weythel | | | Settlement | SO2357 |
| Gwenddwr | Gwenddwr | | | Settlement | SO0643 |
| Gwestydd | Gwestydd | | | Settlement | SO1193 |
| Gwystre | Gwystre | | | Settlement | SO0665 |
| Hawy | Howey | | | Settlement | SO0558 |
| Heartsease | Heartsease | | | Settlement | SO1369 |
| Hen Domen | Hen Domen | | | Man-made feature | SO2198 |
| Hen Ystog | Old Churchstoke | | Old Church Stoke | Settlement | SO2894 |
| Hengoed | Hengoed | | | Settlement | SO2253 |
| Henllan | Henllan | | | Settlement | SJ1308 |
| Heolsenni | Heolsenni | | Heol Senni | Settlement | SN9223 |
| Hirnant | Hirnant | | | Settlement | SJ0522 |
| Yr Hôb | Hope | | | Settlement | SJ2507 |
| Hundred House | Hundred House | | | Settlement | SO1154 |
| Hwytyn | Whitton | | | Settlement | SO2767 |
| Isatyn | Hyssington | | | Settlement | SO3194 |
| Is-y-coed | Is-y-coed | | | Area | SH7700 |
| Kinnerton | Kinnerton | | | Settlement | SO2463 |
| Libanus | Libanus | | | Settlement | SN9925 |
| Llaethdy | Llaethdy | | | Settlement | SO0680 |
| Llanafan-fawr | Llanafan-fawr | | Llanafan Fawr | Settlement | SN9655 |
| Llanandras | Presteigne | | | Settlement | SO3164 |
| Llananno | Llananno | | | Settlement | SO0974 |
| Llanarmon Mynydd Mawr | Llanarmon Mynydd Mawr | | | Settlement | SJ1327 |
| Llanbadarn Fynydd | Llanbadarn Fynydd | | | Settlement | SO0978 |
| Llanbadarn-y-garreg | Llanbadarn-y-garreg | | Llanbadarn y Garreg | Settlement | SO1148 |
| Llanbedr | Llanbedr | | | Settlement | SO1446 |
| Llanbedr Ystrad Yw | Llanbedr Ystrad Yw | | | Settlement | SO2320 |
| Llanbister | Llanbister | | | Settlement | SO1073 |
| Llanbrynmair | Llanbrynmair | | | Settlement | SH8902 |
| Llancowrid | Llancowrid | | | Settlement | SO1990 |
| Llan-ddew | Llan-ddew | | Llanddew | Settlement | SO0530 |
| Llanddewi Ystradenni | Llanddewi Ystradenni | | Llanddewi Ystradenny | Settlement | SO1068 |
| Llanddewi’r-cwm | Llanddewi’r-cwm | | | Settlement | SO0348 |
| Llandeglau | Llandegley | | | Settlement | SO1362 |
| Llandeilo Graban | Llandeilo Graban | | | Settlement | SO0944 |
| Llandeilo'r-fân | Llandeilo'r-fân | | Llandeilo'r-Fan | Settlement | SN8934 |
| Llandinam | Llandinam | | | Settlement | SO0288 |
| Llandrindod | Llandrindod Wells | | | Settlement | SO0561 |
| Llandrinio | Llandrinio | | | Settlement | SJ2817 |
| Llandyfaelog Fach | Llandyfaelog Fach | | | Settlement | SO0332 |
| Llandyfaelog Tre'r-graig | Llandyfaelog Tre'r-graig | | | Settlement | SO1229 |
| Llandyfalle | Llandyfalle | | Llandefalle | Settlement | SO1035 |
| Llandysilio | Four Crosses | | | Settlement | SJ2619 |
| Llandysul | Llandysul | | Llandyssil | Settlement | SO1995 |
| Llaneglwys | Llaneglwys | | | Settlement | SO0638 |
| Llanelwedd | Llanelwedd | | | Settlement | SO0451 |
| Llanerfyl | Llanerfyl | | | Settlement | SJ0309 |
| Llan-faes | Llan-faes | | | Settlement | SO0328 |
| Llanfair Caereinion | Llanfair Caereinion | | | Settlement | SJ1006 |
| Llanfair Llythynwg | Gladestry | | | Settlement | SO2355 |
| Llanfair-ym-Muallt | Builth Wells | | | Settlement | SO0350 |
| Llanfaredd | Llanfaredd | | | Settlement | SO0650 |
| Llanfechain | Llanfechain | | | Settlement | SJ1820 |
| Llanfellte | Llanfellte | | | Settlement | SO1421 |
| Llanfihangel Cwm Du | Llanfihangel Cwm Du | Cwm-du | Cwmdu | Settlement | SO1823 |
| Llanfihangel Dyffryn Arwy | Michaelchurch-on-Arrow | | | Settlement | SO2450 |
| Llanfihangel Helygen | Llanfihangel Helygen | | | Settlement | SO0464 |
| Llanfihangel Nant Brân | Llanfihangel Nant Brân | | | Settlement | SN9434 |
| Llanfihangel Nant Melan | Llanfihangel Nant Melan | | | Settlement | SO1858 |
| Llanfihangel Rhydieithon | Llanfihangel Rhydieithon | | | Settlement | SO1566 |
| Llanfihangel Tal-y-llyn | Llanfihangel Tal-y-llyn | | Llanfihangel Talyllyn | Settlement | SO1128 |
| Llanfihangel-yng-Ngwynfa | Llanfihangel-yng-Ngwynfa | | | Settlement | SJ0816 |
| Llanfilo | Llanfilo | | | Settlement | SO1133 |
| Llanfrynach | Llanfrynach | | | Settlement | SO0725 |
| Llanfyllin | Llanfyllin | | | Settlement | SJ1419 |
| Llangadfan | Llangadfan | | | Settlement | SJ0110 |
| Llangamarch | Llangamarch Wells | | Llangammarch Wells | Settlement | SN9347 |
| Llangasty Tal-y-llyn | Llangasty Tal-y-llyn | | | Settlement | SO1326 |
| Llangatwg | Llangattock | | | Settlement | SO2117 |
| Llangedwyn | Llangedwyn | | | Settlement | SJ1824 |
| Llangenni | Llangenni | | Llangenny | Settlement | SO2417 |
| Llan-gors | Llan-gors | | Llangors Llangorse | Settlement | SO1327 |
| Llangurig | Llangurig | | | Settlement | SN9079 |
| Llangynidr | Llangynidr | | | Settlement | SO1519 |
| Llangynllo | Llangynllo | | Llangunllo | Settlement | SO2171 |
| Llangynog | Llangynog | | | Settlement | SJ0526 |
| Llangynyw | Llangynyw | | | Settlement | SJ1208 |
| Llanhamlach | Llanhamlach | | | Settlement | SO0926 |
| Llanidloes | Llanidloes | | | Settlement | SN9584 |
| Llanigon | Llanigon | | | Settlement | SO2140 |
| Llaniwared | Llaniwared | | | Area | SN8877 |
| Llanllugan | Llanllugan | | | Settlement | SJ0502 |
| Llanllwchaearn | Llanllwchaearn | | Llanllwchaiarn | Settlement | SO1192 |
| Llanllŷr | Llanyre | | | Settlement | SO0462 |
| Llanmerewig | Llanmerewig | | | Settlement | SO1592 |
| Llannerch Emrys | Llannerch Emrys | | | Settlement | SJ2023 |
| Llannewydd | Newchurch | | | Settlement | SO2150 |
| Llanrhaeadr-ym-Mochnant | Llanrhaeadr-ym-Mochnant | | | Settlement | SJ1226 |
| Llansanffraid | Llansanffraid | | Llansantffraed | Settlement | SO1223 |
| Llansanffraid Cwmteuddwr | Llansanffraid Cwmteuddwr | | | Settlement | SN9667 |
| Llansanffraid-ym-Mechain | Llansanffraid-ym-Mechain | | Llansantffraid-ym-Mechain | Settlement | SJ2120 |
| Llansbyddid | Llansbyddid | | Llanspyddid | Settlement | SO0128 |
| Llansilin | Llansilin | | | Settlement | SJ2028 |
| Llansteffan | Llansteffan | | Llanstephan | Settlement | SO1242 |
| Llanwddyn | Llanwddyn | | | Settlement | SJ0219 |
| Llanwnnog | Llanwnnog | | | Settlement | SO0293 |
| Llanwrin | Llanwrin | | | Settlement | SH7803 |
| Llanwrthwl | Llanwrthwl | | | Settlement | SN9763 |
| Llanwrtyd | Llanwrtyd Wells | | | Settlement | SN8746 |
| Llanwyddelan | Llanwyddelan | | | Settlement | SJ0701 |
| Llanymynech | Llanymynech | | | Settlement | SJ2620 |
| Llan-y-wern | Llan-y-wern | | | Settlement | SO1028 |
| Llawr-y-glyn | Llawr-y-glyn | | Llawryglyn | Settlement | SN9391 |
| Lledrod | Lledrod | | | Man-made feature | SJ2229 |
| Llowes | Llowes | | | Settlement | SO1941 |
| Llwynderw | Llwynderw | | | Settlement | SJ2003 |
| Llwyn-gwern | Llwyn-gwern | | | Topographical feature | SH7504 |
| Llwyni | Lloyney | | | Settlement | SO2475 |
| Llwyn-y-gog | Llwyn-y-gog | | | Settlement | SN8792 |
| Llys-wen | Llys-wen | | Llyswen | Settlement | SO1337 |
| Llywel | Llywel | | | Settlement | SN8730 |
| Machynlleth | Machynlleth | | | Settlement | SH7400 |
| Maelienydd | Maelienydd | | | Area | SO1371 |
| Maes-mawr | Maes-mawr | | Maesmawr | Area | SO0391 |
| Maesmynys | Maesmynys | | | Settlement | SO0147 |
| Maesyfed | New Radnor | | | Settlement | SO2160 |
| Maesyronnen | Maesyronnen | | | Man-made feature | SO1740 |
| Manafon | Manafon | | | Settlement | SJ1102 |
| Meifod | Meifod | | | Settlement | SJ1513 |
| Melinbyrhedyn | Melinbyrhedyn | | | Settlement | SN8198 |
| Melltyn | Mellington | | | Settlement | SO2693 |
| Merthyr Cynog | Merthyr Cynog | | | Settlement | SN9837 |
| Mochdre | Mochdre | | | Settlement | SO0788 |
| Moel Ddolwen | Moel Ddolwen | | | Man-made feature | SH9807 |
| Moelfre | Moelfre | | | Settlement | SJ1828 |
| Nant-ddu | Nant-ddu | | | Settlement | SO0014 |
| Nant-glas | Nant-glas | | Nant Glas | Settlement | SN9965 |
| Nantmel | Nantmel | | | Settlement | SO0366 |
| Norton | Norton | | | Settlement | SO3067 |
| Pandy Rhiwsaeson | Pandy Rhiwsaeson | | | Settlement | SH9004 |
| Pant-glas | Pant-glas | | | Settlement | SJ1813 |
| Pant-mawr | Pant-mawr | | | Settlement | SN8482 |
| Pant-y-dŵr | Pant-y-dŵr | | | Settlement | SN9874 |
| Pant-y-ffridd | Pant-y-ffridd | | | Settlement | SJ1502 |
| Patrisio | Partrishow | | | Settlement | SO2722 |
| Pedair-ffordd | Pedair-ffordd | | | Settlement | SJ1124 |
| Pencelli | Pencelli | | | Settlement | SO0925 |
| Pencraig | Old Radnor | | | Settlement | SO2559 |
| Penegoes | Penegoes | | | Settlement | SH7700 |
| Penffordd-las | Staylittle | | | Settlement | SN8892 |
| Pengenffordd | Pengenffordd | | | Settlement | SO1730 |
| Pennant | Pennant | | | Settlement | SN8797 |
| Pennant Melangell | Pennant Melangell | | | Area | SJ0226 |
| Pennorth | Pennorth | | | Settlement | SO1126 |
| Pen-pont | Pen-pont | | | Settlement | SN9728 |
| Pen-rhos | Pen-rhos | | | Settlement | SN8011 |
| Pentre Elan | Elan Village | | | Settlement | SN9365 |
| Pentre Llifior | Pentre Llifior | | | Settlement | SO1497 |
| Pentre Llwyn-llwyd | Pentre Llwyn-llwyd | | | Settlement | SN9654 |
| Pentre’r-beirdd | Pentre’r-beirdd | | | Settlement | SJ1813 |
| Pentre-bach | Pentre-bach | | | Settlement | SN8233 |
| Pentrefelin | Pentrefelin | | | Settlement | SJ1524 |
| Pentre'r-felin | Pentre'r-felin | | | Settlement | SN9130 |
| Pentyrch | Pentyrch | | | Area | SJ0608 |
| Pen-wyllt | Pen-wyllt | | Penwyllt | Settlement | SN8515 |
| Pen-y-bont | Pen-y-bont | | Penybont | Settlement | SO1164 |
| Pen-y-bont Llannerch Emrys | Pen-y-bont Llannerch Emrys | | | Settlement | SJ2123 |
| Pen-y-bont-fawr | Pen-y-bont-fawr | | Pen-y-Bont-Fawr | Settlement | SJ0824 |
| Pen-y-cae | Pen-y-cae | | | Settlement | SN8413 |
| Pen-y-foel | Pen-y-foel | | | Settlement | SJ2621 |
| Penygarnedd | Penygarnedd | | | Settlement | SJ1023 |
| Penygelli | Penygelli | | | Settlement | SO1291 |
| Pont-dôl-goch | Pont-dôl-goch | | Pontdolgoch | Settlement | SO0093 |
| Pont-faen | Pont-faen | | | Settlement | SN9934 |
| Pont-ffranc | Frank's Bridge | | | Settlement | SO1155 |
| Pontithel | Pontithel | | | Settlement | SO1636 |
| Pontllogel | Pontllogel | | | Settlement | SJ0315 |
| Pontneddfechan | Pontneddfechan | | | Settlement | SN9007 |
| Pontrobert | Pontrobert | | | Settlement | SJ1012 |
| Pontsenni | Sennybridge | | | Settlement | SN9228 |
| Pwllgloyw | Pwllgloyw | | | Settlement | SO0333 |
| Refail | Refail | | | Settlement | SJ1900 |
| Rhaeadr Gwy | Rhayader | | | Settlement | SN9768 |
| Rhiwlas | Rhiwlas | | | Settlement | SJ1932 |
| Rhiwlen | Rhiwlen | | | Settlement | SO1349 |
| Rhos-goch | Rhos-goch | | | Settlement | SO1847 |
| Rhosybrithdir | Rhosybrithdir | | Rhos y-brithdir | Settlement | SJ1322 |
| Rhos-y-meirch | Rhos-y-meirch | | | Settlement | SO2769 |
| Rhosypentref | Rhosypentref | | | Settlement | SN9582 |
| Rhydlydan | Rhydlydan | | | Settlement | SO0593 |
| Rhydycroesau | Rhydycroesau | | | Settlement | SJ2430 |
| Saint Harmon | Saint Harmon | | St Harmon | Settlement | SN9872 |
| Saith Maen | Saith Maen | | | Man-made feature | SN9460 |
| Sarn | Sarn | | | Settlement | SO2090 |
| Sarnau | Sarnau | | | Settlement | SJ2315 |
| Sarnau | Sarnau | | | Settlement | SO0232 |
| Sarn-wen | Sarn-wen | | | Settlement | SJ2718 |
| Sgethrog | Sgethrog | | | Settlement | SO1025 |
| Snead | Snead | | | Settlement | SO3192 |
| Soar | Soar | | | Settlement | SN9732 |
| Stepaside | Stepaside | | | Settlement | SO0889 |
| Tafolwern | Tafolwern | | | Settlement | SH8902 |
| Talachddu | Talachddu | | | Settlement | SO0833 |
| Talerddig | Talerddig | | | Settlement | SH9300 |
| Talgarth | Talgarth | | | Settlement | SO1533 |
| Tal-y-bont | Buttington | | | Settlement | SJ2408 |
| Tal-y-bont ar Wysg | Talybont-on-Usk | | | Settlement | SO1122 |
| Tal-y-llyn | Tal-y-llyn | | | Settlement | SO1027 |
| Tal-y-wern | Tal-y-wern | | | Settlement | SH8200 |
| Thorn | Thorn | | | Settlement | SO2763 |
| Tirabad | Tirabad | | | Settlement | SN8741 |
| Tirymynach | Tirymynach | | | Area | SH9301 |
| Tirymynach | Tirymynach | | | Settlement | SJ2612 |
| Trallong | Trallong | | | Settlement | SN9629 |
| Y Trallwng | Welshpool | | | Settlement | SJ2207 |
| Trannon | Trannon | | | Area | SN9095 |
| Treberfedd | Middletown | | | Settlement | SJ3012 |
| Trecastell | Trecastell | | | Settlement | SN8829 |
| Tredomen | Tredomen | | | Settlement | SO1231 |
| Tredwstan | Tredwstan | | | Settlement | SO1332 |
| Trefaldwyn | Montgomery | | | Settlement | SO2296 |
| Trefeca | Trefeca | | | Settlement | SO1432 |
| Trefeglwys | Trefeglwys | | | Settlement | SN9790 |
| Trefeitha | Trefeitha | | | Settlement | SO1031 |
| Trefnannau | Trefnannau | | | Settlement | SJ2015 |
| Trefyclo | Knighton | | | Settlement | SO2872 |
| Tre-goed | Tregoyd | | | Settlement | SO1937 |
| Tregynon | Tregynon | | | Settlement | SO0998 |
| Trelystan | Trelystan | | | Settlement | SJ2603 |
| Treowen | Treowen | | | Settlement | SO1191 |
| Tre'r-llai | Leighton | | | Settlement | SJ2405 |
| Tretŵr | Tretower | | | Settlement | SO1821 |
| Trewern | Trewern | | | Settlement | SJ2811 |
| Troedrhiwdalar | Troedrhiwdalar | | | Settlement | SN9553 |
| Tŷ-crwyn | Tŷ-crwyn | | | Settlement | SJ1018 |
| Tylwch | Tylwch | | | Settlement | SN9680 |
| Ucheldre | Ucheldre | | | Area | SO1398 |
| Uwch-y-coed | Uwch-y-coed | | | Area | SN8294 |
| Walton | Walton | | | Settlement | SO2559 |
| Walton Green | Walton Green | | | Settlement | SO2659 |
| Waun | Waun | | | Settlement | SJ2319 |
| Waun-fach | Waun-fach | | | Settlement | SJ2017 |
| Winllan | Winllan | | | Settlement | SJ2121 |
| Womaston | Womaston | | | Settlement | SO2660 |
| Ynys Isaf | Ynys Isaf | | | Settlement | SN7911 |
| Yr Ystog | Churchstoke | | Church Stoke | Settlement | SO2794 |
| Ystradfellte | Ystradfellte | | | Settlement | SN9213 |
| Ystradgynlais | Ystradgynlais | | | Settlement | SN7810 |