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.