This is a list of seasons played by Carmarthen Town A.F.C. in Welsh and European football, from 1959 (earliest known record) to the end of the last completed season. It details the club's achievements in all major competitions.
Carmarthen Town have won the Welsh Cup once, the Welsh League Cup twice and the Welsh Football League Cup once. They have also qualified for UEFA Cup and UEFA Intertoto Cup on two occasions.