Damian Cassidy (born 22 July 1965) is a former Gaelic football manager and former player for the Derry county team in the 1980s and 1990s, who was part of the county's 1993 All-Ireland Championship winning side, starting at left half forward. He also won two Ulster Senior Championship medals, three National League titles, and a range of under-age inter-county medals with the county. Cassidy played his club football for Bellaghy Wolfe Tones and won five Derry Championships and the 1994 Ulster Senior Club Football Championships with the club. For both club and county he usually played as a forward. Cassidy was also a talented hurler.