Llantwit Major A.F.C. is a football club based in Llantwit Major, Vale of Glamorgan. The team currently plays in the .
Llantwit Major A.F.C. was founded in 1962. In 1971 they joined the South Wales Amateur League.
In the 2011âÂÂ12 season they were South Wales Amateur League champions, and joined the Welsh Football League Division Three. From 2016 to 2018 the club achieved back to back promotions, reaching Division One. In 2019 they were founder members of the newly formed Cymru South. In 2021âÂÂ22 they won the Cymru South title, but were denied promotion, allowing runners-up Pontypridd Town to enter the Cymru Premier instead.
In the 2023âÂÂ24 season they appeared in the FENIX Trophy, and finished second in their group, with four points in four games. This included a win over the reigning champions BK Skjold in their opening game. In 2024âÂÂ25 the competition switched to a knockout format. Llantwit Major were drawn against K. Berchem Sport. In the first leg, Llantwit Major lost 7âÂÂ2 at Berchem. In the return leg, a month later, they lost 1âÂÂ0 at the SDM Glass Stadium in Bridgend.
Llantwit Major supporters are known as the 'Windmill Army'.
The club maintains a strong friendship with Boca Juniors due to the shared colours of the two clubs. As a result, River Plate are considered rivals, as well as traditional rivals Pontypridd United FC.