William LeMassena (May 23, 1916 – January 19, 1993) was an American actor. He was best known for his roles in Broadway and off-Broadway productions, the film All That Jazz (1979), and the soap opera As the World Turns (1985–1992). LeMassena was born in Glen Ridge, New Jersey on May 23, 1916, the son of Margery L. (1883–1942) and William Henry LeMassena (1874–1944). He graduated from New York University.