The Borough of Llanelli was one of six local government districts of the county of Dyfed, Wales from 1974 to 1996.

The district held borough status, allowing the chair of the council to take the title of mayor.

[3] The borough of Llanelli 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.

[4] 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.

[3] In 1981 the council built additional offices called Ty Elwyn on an adjoining site.