William Bass

William, Bill or Billy Bass may refer to:

• William M. Bass (born 1928), American forensic anthropologist
• Sir William Bass, 2nd Baronet (1879–1952), British racehorse owner
• William Bass (brewer) (1717–1787), British entrepreneur founder of Bass Brewery
• Bill Bass (1922–1967), Canadian football player
• Big Mouth Billy Bass, an animatronic fish
• Billy Bass Nelson (born 1951), American musician