Cwmamman United started their history in 1976 in the Neath & District League Division Three.

In Season 1981–82 Cwmamman entered a reserve side in Division Four of the same league.

It wasn't long before (season 1985–86) when Cwmamman were promoted to the Premier League.

Cwmamman were then relegated once more and didn't return to the Premier until season 1998–99 and in that season finished runners-up and played in a play-off game against Garden Village to enter the Welsh Football League which they lost 3–0 after extra time.

[1] In 2017, Cwmamman reached Division One of the Welsh Football League for the first time after winning promotion.