William Kidd (1645–1701) was a Scottish sailor who was tried and executed for piracy.
William, Bill or Billy Kidd may also refer to:
William Kidd (painter) (1796–1863), Scottish painter Billy Kidd (footballer) (1908–1978), English footballer William Matthew Kidd (1918–1998), United States federal judge Billy Kidd (born 1943), American ski racer Bill Kidd (American politician) (born 1952), member of the Missouri House of Representatives Bill Kidd (born 1956), Scottish National Party politician Billy Kidd (American football) (born 1959), American football center William Kidd (composer) (fl. 1987–2012), American musician, orchestrator, and composer
See also William Kyd (fl. 1430–1453), English pirate Captain Kidd (disambiguation) William the Kid (disambiguation) Billy the Kid (disambiguation)