John Kennedy (born 4 September 1939), widely known as Jack Kennedy, is a former professional footballer from Northern Ireland who played as a goalkeeper. He played for several years for Distillery in his native country before turning professional with Celtic. After a spell in the United States with the Detroit Cougars, he spent seven years with English Football League club Lincoln City and had a spell in non-league football with Lincoln United. Kennedy was an amateur international for Northern Ireland, played for the Irish League representative team, and kept goal for Great Britain in qualifying matches for the 1964 Summer Olympics.