Jack Cosgrove (born 1949 in Connemara County Galway) is an Irish former sportsperson. He played Gaelic football at various times with his local clubs Clifden Midleton St. Nicholas’ and Spiddal and was a member of the Galway senior inter-county team from 1971 until 1977. Cosgrove is unfortunately a member of a unique set of Galway players who lost three All-Ireland finals in four years.