List of Sites of Special Scientific Interest in Carmarthen & Dinefwr

This is a list of the Sites of Special Scientific Interest (SSSIs) in the Carmarthen & Dinefwr Area of Search. For SSSIs elsewhere in Wales, see List of SSSIs by Area of Search.

* Aber Taf / Taf Estuary
* Afon Tywi
* Allt Penycoed Stream Section
* Allt y Gaer
* Allt y wern
* Arfordir Marros-Pentywyn / Marros-Pendine Coast
* Beacon Bog
* Birdshill Quarry
* Bishops Pond
* Broad Oak and Thornhill Meadows
* Cae Blaen-dyffryn
* Cae Cilmaenllwyd
* Cae Cwm-tywyll
* Cae Gwynfryn
* Cae Maes-y-ffynnon
* Caeau Blaenau-mawr
* Caeau Blaen-yr-Orfa
* Caeau Capel Hendre
* Caeau Ffos Fach
* Caeau Lotwen
* Caeau Nant Garenig
* Caeau Nantsais
* Caeau Pant-y-Bryn
* Caeau Rhyd-y-gwiail
* Caeau Tir-mawr
* Carreg Cennan
* Cefn Blaenau
* Cernydd Carmel
* Chwarel Talar Wen (Talar Wen Quarry)
* Coed Cochion Quarry
* Coed Gwempa
* Coed Llandyfan
* Coedydd Capel Dyddgen
* Coedydd Tregyb / Tregyb Woodlands
* Coedydd y Garn
* Cors Farlais
* Cors Goch, Llanllwch
* Corsydd a Rwyth Cilyblaidd
* Craig Ddu - Wharley Point Cliffs
* Creigiau Llansteffan (Llanstephan Cliffs)
* Crug Farm Quarry
* Crychan Forest Tracks
* Cwar Glas Quarry and Sawdde Gorge
* Cwm Crymlyn Road Section
* Cwm Twrch
* Cwm yr Abbey Stream Section
* Dan-Lan-Y-Castell Quarry
* Derwen-fach Meadow
* Dinefwr Estate
* Dolaucothi Gold Mines
* Ffair Fach Railway Cutting and River Section
* Glan Pibwr Stream Section
* Gweunydd a Choed Pen-Ty (Pen-Ty Pastures & Wood)
* Llanfallteg Track Section
* Llety - Wen
* Llyn Llech Owain
* Llyn Pencarreg
* Llynoedd Tal-y-llechau, (Talley Lakes)
* Maesyprior
* Mandinam a Coed Deri
* Meidrim Road Section
* Mylett Road Section
* Mynydd Du (Black Mountain)
* Mynydd Llangyndeyrn
* Mynydd Ystyfflau-Carn
* Pine Lodge Meadow
* Pont y Fenni Quarry and Road Cutting
* Pwll Lagoon
* Rhos Cruglas
* Rhos Dolau-Bran
* Rhos Pwllygawnen
* Rhosydd Castell-du & Plas-y-bettws
* Twyni Lacharn - Pentywyn / Laugharne - Pendine Burrows
* Waun-Ddu
* Waunfawr
* Wernbongam Stream Section and Quarry
* Whitehill Down
* Ydw Valley and Fron Road Geological Exposures
* Ynys Uchaf