William Pitt

William Pitt may refer to:

* William Pitt, 1st Earl of Chatham (1708–1778), Prime Minister of Great Britain 1766–1768; often known as William Pitt the Elder
* William Pitt the Younger (1759–1806), his son and Prime Minister of Great Britain (1783–1801) and (1804–1806)
* William Pitt (Mormon) (1813–1873), an early Mormon bandleader
* William Augustus Pitt (c. 1728–1809), Eighteenth century British general
* Ali'i William Pitt Kalanimoku (d. 1827), Prime Minister of Kamehameha the Great who adopted the name of the British Prime Minister at the time
* Ali'i William Pitt Leleiohoku I (1821–1848), husband of Princess Hariett Nahienaena and Princess Ruth Keelikolani and son of Kalanimoku
* William Pitt Kinau (1842–1859), prince of Hawaii and son of Keelikolani and Chief Leleiohoku
* William Pitt Leleiohoku II (1854–1877), Crown Prince of Hawaii and heir apparent of King David Kalakaua
* William Baker Pitt (1856–c.1920), founder of Swindon Town F.C. and Catholic prebendary
* William Rivers Pitt (b. 1971), left-wing American essayist
* Bill Pitt (b. 1937), British politician and Liberal Member of Parliament for Croydon North West 1981–1983
* William Pitt (architect) (1855–1918), Australian 19th century architect
* William Pitt (ship-builder) (d. 1840), author of "The Sailor's Consolation"
* William Pitt (Canada), inventor of the underwater cable ferry in the early 1900s
* Brad Pitt, American actor (birth name William Bradley Pitt)
*William Fox-Pitt
* William Pitt Union, the student union at the University of Pittsburgh
* William Pitt Debating Union, a debating society at the University of Pittsburgh