Llanelli is a constituency of the House of Commons of the Parliament of the United Kingdom. From 1918 to 1970 the official spelling of the constituency name was Llanelly. It elects one Member of Parli

Llanelli was a constituency of the Senedd. It elected one Member of the Senedd by the first past the post method of election. Also, however, it was one of eight constituencies in the Mid and West Wale