William Guest

William Guest may refer to:


 * William Guest (rugby union) (1903–1991), English player for Wakefield RFC, later a Territorial Army major
 * William S. Guest (1913–1992), U.S. Navy rear-admiral
 * William Guest (singer) (1941–2015), American R&B/soul singer, a member of Gladys Knight & the Pips
 * William Guest (Reverend), English founder of Milton Mount College