List of Famous people named William

William Thomas was an Anglo-Canadian architect. His son William Tutin Thomas (1829–1892) was also an architect, working mostly in Montreal, Quebec.

William Houston Long was a member of the Queensland Legislative Council.

Captain William Henry Irvine Shakespear, was a British civil servant and explorer who mapped uncharted areas of Northern Arabia and made the first official British contact with Ibn Sa'ud, future king of Saudi Arabia. He was the military adviser to Ibn Sa'ud from 1910 to 1915, when he was shot and killed in the Battle of Jarrab by Ibn Shraim.

William Eggleston is an American photographer. He is widely credited with increasing recognition for color photography as a legitimate artistic medium. Eggleston's books include William Eggleston's Guide (1976) and The Democratic Forest (1989).

William Wirt Winchester was the treasurer of the Winchester Repeating Arms Company, a position he held until his death in 1881.

Hon. William Fraser, of Fraserfield was a Scottish Jacobite politician.