Albert George DeMarco, Sr. (May 10, 1916 - May 25, 1989) was a Canadian ice hockey forward.
Born in North Bay, Ontario, DeMarco started his National Hockey League career with the Chicago Black Hawks. He would also play with the New York Rangers, Boston Bruins and Toronto Maple Leafs. His career lasted from 1938 to 1947.
DeMarco's son Ab Jr. also played in the NHL.