William Lanteau (12 November 1922 – 3 November 1993) was 'n Amerikaanse akteur. Hy was bekend vir sy rolle in die rolprente The Honeymoon Machine (1961) en On Golden Pond (1981), en in die televisiereekse Wonder Woman (1975) en Newhart (1982). 1961: The Honeymoon Machine 1981: On Golden Pond 1975: Wonder Woman 1982: Newhart 1986: Me & Mrs. C. 1991: Shadow of a Doubt William Lanteau in die Internet-rolprentdatabasis