Kenneth Alvin Hahn (June 5, 1928 – August 2, 2006) was an American water polo player who competed in the 1956 Summer Olympics.

Hahn was a member of the American water polo team which finished fifth in the 1956 tournament.

He played one match as goalkeeper.

In 1982, 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.