William Pitt

• William Pitt, 1st Earl of Chatham, William Pitt the Elder, British prime minister
• William Pitt the Younger, son of the above and British prime minister

Arts and entertainment

• William Pitt , English bandleader and religious musician
• Brad Pitt, American actor
• William Pitt, American singer

  Law and politics

• William Pitt , English courtier and politician who sat in the House of Commons
• William Morton Pitt, British politician and MP for Poole and Dorset
• William Pitt Murray, American lawyer and politician
• Bill Pitt , British politician and MP for Croydon North West

  Nobility

• William Pitt Kalanimoku, Hawaiian noble, high chief to King Kamehameha I
• William Pitt Amherst, 1st Earl Amherst, British Governor-General of India
• William Pitt Leleiohoku I, Hawaiian noble, son of Kalanimoku
• John William Pitt Kinau, prince of Hawaii and son of Leleiohoku I
• William Pitt Leleiohoku II, Crown Prince of Hawaii

  Sports

• William Pitt , English cricketer
• Bill Pitt , Australian racing driver and motor racing official
• William Fox-Pitt, English equestrian

  Others

• William Augustus Pitt, British army general
• William Pitt , English ship-builder
• William Pitt , Canadian inventor of the underwater cable ferry
• William Pitt , Australian architect
• William Baker Pitt, English clergyman
• William Rivers Pitt, American essayist and activist