William John Evans, known as Bill Evans (August 16, 1929 – September 15, 1980) was an American jazz pianist. His use of impressionist harmony, inventive interpretation of traditional jazz repertoire, and trademark rhythmically independent, "singing" melodic lines influenced a generation of pianists, including Chick Corea, Herbie Hancock, John Taylor, Steve Kuhn, Don Friedman, Denny Zeitlin, Bobo Stenson and Keith Jarrett, as well as guitarists Lenny Breau and Pat Metheny. The music of Bill Evans continues to inspire younger pianists like Marcin Wasilewski, Fred Hersch, Ray Reach, Bill Charlap, Lyle Mays, Eliane Elias and arguably Brad Mehldau, early in his career.

Evans is an inductee of the Down Beat Jazz Hall of Fame.