John "Jack" Arthur Spargo (born June 3, 1931) is an American water polo player who competed in the 1952 Summer Olympics.

He played college water polo for the UCLA Bruins serving for a time as team captain.

Spargo was a member of the American water polo team which finished fourth in the 1952 tournament.

In 1981, he was inducted into the USA Water Polo Hall of Fame.

This biographical article relating to a water polo figure from the United States is a stub.