There have been several people named William King:

• William King (1663-1712), English poet.
• William King (1650-1729), Anglican Archbishop of Dublin.
• William King (1786-1865), British physician, supporter of cooperative movement.
• William King (1768-1852), American statesman, governor of Maine
• William King (1959-), British author.

Also see:

• William Henry King (1863-1949), U.S. Senator from Utah
• William R. King (1786-1853), U.S. Vice-President
• William S. King (1828-1900), U.S. Congressman from Minnesota
• William Lyon Mackenzie King, Prime Minister of Canada.
• King William