is a football club from Treharris in south Wales who play in the Ardal SE League.

Their home ground is based in Parc Taf Bargoed in the neighbouring village, Trelewis.

The original Treharris club was formed in 1889 as one of the earliest association football clubs based in south Wales and founding members of the South Wales League - a predecessor of the Welsh Football League - in 1890.

[citation needed] Treharris joined the Southern Football League in 1910 and competed in division two for four seasons before the outbreak of the Great War.

At the start of the 2018–19 season, Treharris moved into their new permanent home on the former ground of the now defunct Trelewis Welfare Football Club in Parc Taf Bargoed on the site of the former Deep Navigation Colliery.