Kilcock town sports pre-date the GAA. Kilcock O’Connell’s were one of the strongest early GAA clubs in Kildare, losing to Clondalkin Round Towers by 0-2 to 0-3 at an August 1888 tournament. Christy Rochfort was the leading footballers and referee of the early team. Six Kilcock men have won All Ireland Senior Football Championships with Kildare(1905,1919). Kilcock last won the Kildare Senior Football Championship in 1958 when they defeated Round Towers on a scoreline of 3-12 to 3-8. In 2010 Kilcock were relegated to Intermediate level bringing an end to 28 years of Senior status.
Davy Dalton was chosen on the Kildare football team of the millennium and an All Stars Award winner in 1997. Larry McCormack captained the Leinster Railway Cup Team in 1957. He also went on to play for Ireland in the same year against a Combined Universities team. He lined out at centre half forward that day.