Trefelin Boys & Girls Club, often shortened to Trefelin BGC, is an association football club who play their home games at Ynys Park in Port Talbot, Neath Port Talbot, Wales.

[2] In 2007 they were promoted as champions of the South Wales Amateur League Second Division and following their first season in the First Division, Trefelin BGC finished the season as runners-up to eventual champions and former Welsh League team AFC Porth.

[3] In 2014, Trefelin BGC won promotion from the South Wales Amateur League First Division[4] with at least a fourteen-game unbeaten run.

They were promoted to the second tier of the Welsh football pyramid in June 2020, joining the Cymru South for the 2020–21 season.

[8] In 2010, Trefelin BGC Ladies were promoted from the Southern Conference into the Welsh Premier Women's Football League.