Carmarthen District Council (Welsh: Caerfyrddin) was one of six local government districts of the county of Dyfed, west Wales, from 1974 to 1996.

The district was formed on 1 April 1974 under the Local Government Act 1972, covering the area of four former districts from the administrative county of Carmarthenshire, which were abolished at the same time:^[1][2]

• Carmarthen Municipal Borough
• Carmarthen Rural District
• Newcastle Emlyn Rural District
• Newcastle Emlyn Urban District

Carmarthen district was abolished 22 years later under the Local Government (Wales) Act 1994, with the area becoming part of the new Carmarthenshire unitary authority on 1 April 1996.^[3]

The first election to the council was held in 1973, initially operating as a shadow authority before coming into its powers on 1 April 1974. A majority of the seats on the council were held by independents throughout the council's existence.^[4]

The most significant political grouping (as distinct from the independents) was the Labour Party who held a number of seats in Carmarthen Town and the former mining wards of the Gwendraeth Valley.

• Carmarthen District Council election, 1973
• Carmarthen District Council election, 1976
• Carmarthen District Council election, 1979
• Carmarthen District Council election, 1983
• Carmarthen District Council election, 1987
• Carmarthen District Council election, 1991

Throughout its existence, the council was based at 3 Spilman Street in Carmarthen, which had previously been the offices of Carmarthen Rural District Council, one of its predecessor authorities.^[5][6][7]