William Bass
William, Bill or Billy Bass may refer to:
People
- 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
- Billy Bass Nelson (born 1951), American musician
Other
- Big Mouth Billy Bass, an animatronic fish