William King (1663 - 1712) was an English poet.

William King, D.D. (1650-1729) was an Anglican divine in Ireland, who was Archbishop of Dublin from 1702 to 1729. He was also well known as an author and for his support of the Glorious Revolution.

Dr. William King (April 17, 1786 - October 19,1865) was a British physician and philanthropist from Brighton. He is best known as an early supporter of the Cooperative Movement.

William King (1768-1862) was an American merchant, ship-builder, and statesman from Bath, Maine. A principal proponent of statehood for Maine, he became its first governor when it separated from Massachusetts in 1820.

William King (b. 1959) also known as "Bill King" is the writer of a number of successful science-fiction and fantasy books, most notably in Games Workshop's Warhammer and Warhammer 40,000 series, all published by GW's fiction arm, The Black Library. His most memorable characters, Gotrek and Felix, have appeared in a series of novels, beginning with Trollslayer, a collection of previously published and new short stories. His next-most-famous character is Ragnar Blackmane, a Space Marine from the Warhammer 40,000 game setting universe.