William Lyons (disambiguation)

William Lyons was a car manufacturer.

William Lyons may also refer to:
 * William Lyons (philosopher)
 * William L. Lyons (1857–1911), U.S. politician
 * William Henry Holmes Lyons (1843–1924), political leader in Northern Ireland
 * William J. Lyons Jr. (1921–2014), U.S. politician
 * William D. Lyons (1920-1971), American coal miner and politician
 * William John Lyons (born 1966), English Christian theologian
 * William "Billy" Lyons, murdered by Lee Shelton
 * Bill Lyons (born 1958), American baseball player
 * Bill Lyons (screenwriter) (born 1945), actor turned writer for Emmerdale
 * Will Lyons (born 1976), British business correspondent and wine columnist
 * Billy Red Lyons (1932–2009), Canadian professional wrestler