Carmarthen East and Dinefwr (UK Parliament constituency)

Carmarthen East and Dinefwr
County constituency for the House of Commons
Boundary of Carmarthen East and Dinefwr in Wales.
Preserved county	Dyfed
Population	71,046 (2011 census)
Electorate	54,557 (December 2010)
Major settlements	Carmarthen (part), Ammanford, Llandovery
Current constituency
Created	1997
Member of parliament	Jonathan Edwards (Plaid Cymru)
Number of members	One
Created from	Carmarthen, Llanelli
Overlaps
Welsh Assembly	Mid and West Wales
European Parliament constituency	Wales

Carmarthen East and Dinefwr (Welsh:Dwyrain Caerfyrddyn a Dinefwr) is a constituency of the House of Commons of the Parliament of the United Kingdom. It elects one Member of Parliament (MP) by the first past the post system of election. It was created in 1997 mostly from the former seat of Carmarthen. The current MP is Plaid Cymru's Jonathan Edwards.

The Carmarthen East and Dinefwr Welsh Assembly constituency was created with the same boundaries in 1999.

The existing constituency is within the Carmarthenshire authority area, with Llanybydder, Llandovery and Llanfihangel-ar-Arth in the north, Llanfihangel-uwch-Gwili, Llanegwad, and Llandeilo in the central area, and Ammanford and Glanamman in the south.

Boundary changes for the 2010 general election introduced minor alterations, with the areas around Hermon and Llanpumsaint removed to the Carmarthen West and South Pembrokeshire constituency. These changes came into effect in 2007 for the National Assembly for Wales.

The constituency includes the whole of 41 Carmarthenshire communities (Abergwili; Ammanford; Betws; Cenarth; Cilycwm; Cwmamman; Cynwyl Gaeo; Dyffryn Cennen; Gorslas; Llanarthney; Llanddarog; Llanddeusant; Llandeilo; Llandovery; Llandybie; Llandyfaelog; Llanegwad; Llanfair-ar-y-bryn; Llanfihangel Aberbythych; Llanfihangel-ar-Arth; Llanfihangel Rhos-y-Corn; Llanfynydd; Llangadog; Llangathen; Llangeler; Llangunnor; Llangyndeyrn; Llanllawddog; Llanllwni; Llansadwrn; Llansawel; Llanwrda; Llanybydder; Llanycrwys; Manordeilo and Salem; Myddfai; Newcastle Emlyn; Pencarreg; Quarter Bach; St Ishmael; Talley).