List of Famous people named William

William James Carter Mayne was an English writer of children's fiction. The Oxford Companion to Children's Literature calls him one of the outstanding children's authors of the 20th century and The Times Literary Supplement reportedly called him "the most original good writer for young people in our time". In 2004, he pled guilty to multiple instances of sexual abuse of his readers.

William Marlowe was a British theatre, television and film actor.

William Motter Inge was an American playwright and novelist, whose works typically feature solitary protagonists encumbered with strained sexual relations. In the early 1950s he had a string of memorable Broadway productions, including Picnic, which earned him a Pulitzer Prize. With his portraits of small-town life and settings rooted in the American heartland, Inge became known as the "Playwright of the Midwest".

William of Saint Omer was a Crusader noble.

Lieutenant-Colonel William Assheton Harbord, 2nd Baron Suffield, was a Member of Parliament for Ludgershall (1790–1796) and Plympton Erle. He was Lieutenant-Colonel commandant of the Norfolk Fencibles (1794), the Blickling Rifle Volunteers (1803), and East Norfolk Regiment of Militi (1808). He was an English amateur cricketer.