People

• William Augustus Pitt (c. 1728-1809), 18th 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
• William Pitt (architect) (1855-1918), Australian 19th century architect
• William Pitt (Canada), inventor of the underwater cable ferry in the early 1900s
• William Pitt (Mormon) (1813-1873), early Mormon bandleader
• William Pitt (ship-builder) (d. 1840), author of The Sailor's Consolation
• Bill Pitt (b. 1937), British politician and Liberal Member of Parliament for Croydon North West 1981-1983
• Brad Pitt, American actor (birth name William Bradley Pitt)

Other uses

• William Pitt Union, the student union at the University of Pittsburgh
• William Pitt Debating Union, a debating society at the University of Pittsburgh

[ Source: Wikipedia ]