Ronald "Ron" Duane Severa (born August 13, 1936) is an American water polo player who competed in the 1956 Summer Olympics and in the 1960 Summer Olympics. He was born in Munden, Kansas. Severa was a member of the American water polo team which finished fifth in the 1956 tournament. He played three matches. Severa attended Compton College and the University of Southern California. He was on the water polo team at the later institution. Four years later he finished seventh with the American team in the 1960 tournament. He played all seven matches and scored four goals.