Jack Cosgrove

Jack Cosgrove may refer to:
 * Jack Cosgrove (American football) (born 1956), American college football coach
 * Jack Cosgrove (Gaelic footballer) (born 1949), Irish former sportsperson
 * Jack Cosgrove (rugby union) (born 1994), Scottish rugby union player
 * Jack Cosgrove (special effects artist) (1902–1965), American special effects artist