Bill Lancaster
- Deathday: 1997-01-04
- Place of birth: Los Angeles, California, USA
William Henry Lancaster (November 17, 1947 – January 4, 1997) was an American screenwriter and actor. He was born November 17, 1947, in Los Angeles, California, the son of Burt Lancaster (1913–1994) and Norma Anderson (1917–1988). He contracted polio at an early age, leaving one leg shorter than the other.
