This is a list of cities, towns and villages in the principal area of Carmarthenshire, Wales.
Aber-arad, Abercrychan, Aber-giar, Abergorlech, Abergwili, Abernant, Alltwalis, Ammanford Bancffosfelen, Bancycapel, Bancyfelin, Bethlehem, Betws, Blaenycoed (or Blaen-y-coed; partially in Carmarthenshire), Blaenwaun, Brechfa, Bronwydd, Bryn, Brynamman, Burry Port, Bynea Caeo or Caio, Capel Dewi, Capel Hendre, Capel Iwan, Carmarthen, Carmel, Carway, Castell-y-Garreg, Cefncaeau, Cefneithin, Cenarth, Cilycwm, Cross Hands, Crugybar, Crwbin, Cwmamman, Cwmann, Cwmbach, Cwmduad, Cwmcarnhywel, Cwmfelin Boeth, Cwmffrwd, Cwmgwili, Cwmhiriaeth, Cwmisfael, Cwmmawr, Cwmpengraig, Cynhordy, Cynwyl Elfed, Cynwyl Gaeo Dafen, Derwydd, Drefach, Dre-fach Felindre, Dryslwyn, Dyffryn Cennen Edwinsford, Eglwyscummin Felinfoel, Felindre, Felingwm Isaf, Felingwm Uchaf, Ferryside, Ffarmers, Fforest, Five Roads, Foelgastell Garnant, Glanamman, Gorslas, Gwernogle, Gwyddgrug, Gwynfe Harford, Hendy, Henllan Amgoed, Henllanfallteg, Hiraeth, Horeb Idole Kidwelly Laugharne, Llanarthney, Llanboidy, Llandawke, Llanddarog, Llanddeusant, Llanddowror, Llandeilo, Llandovery, Llandre, Llandybie, Llandyfaelog, Llandysul, Llanedi (Llanedy), Llanegwad, Llanelli, Llanfair-ar-y-bryn, Llanfallteg, Llanfallteg West, Llanfihangel Aberbythych, Llanfihangel ar Arth, Llanfihangel Rhos-y-Corn, Llanfihangel-uwch-Gwili, Llanfynydd, Llangadog, Llangain, Llangathen, Llangeler, Llangennech, Llanglydwen, Llangunnor, Llangyndeyrn, Llangynin, Llanllawddog, Llanllwch, Llanllwni, Llanmiloe, Llannon, Llanpumsaint, Llansadurnen, Llansadwrn, Llansaint, Llansawel, Llansteffan, Llanwinio, Llanwrda, Llanybri, Llanybydder, Llwynhendy Maesybont, Manordeilo and Salem, Meidrim, Myddfai, Mynyddcerrig, Mynydd-y-Garreg Nantgaredig, Nantycaws, Newcastle Emlyn (partially in Carmarthenshire), Newchurch and Merthyr, New Inn Pantyffynnon, Parc y Rhos, Pemberton, Pembrey and Burry Port Town, Pencader, Pencarreg, Penceilogi, Pendine, Peniel, Penrhiwgoch, Pensarn, Pentrecwrt, Pentregwenlais, Pen-y-graig, Pen-y-groes, Plashett, Pontantwn, Pont-ar-Gothi, Pontarsais, Ponthenri, Pontwelli, Pontyates, Pontyberem, Porthyrhyd, Pumsaint, Pwll, Pwll Trap Quarter Bach Red Roses, Rhandirmwyn, Rhos, Rhosamman, Rhydargaeau, Rhydcymerau, Sandy,
Saron, St Clears, St Ishmael, Stradey, Swiss Valley Talley, Talog, Trap (Trapp), Trelech, Trimsaran, Tumble, Tycroes Upland Arms, Upper Brynamman Whitland