Frederick Vincent Ahern Jr. (born February 12, 1952 in Boston, Massachusetts) is a retired professional ice hockey player who played 146 games in the National Hockey League in 1974–78. He was not drafted by any NHL team. A graduate of Bowdoin College, he played for the California Golden Seals/Cleveland Barons and Colorado Rockies and also represented the United States in the 1976 Canada Cup.