William Tennant

William Tennant may refer to:
 * William Tennant (poet) (1784–1848), Scottish scholar and poet
 * William Tennant (Royal Navy officer) (1890–1963), captain of HMS Repulse
 * William Tennant (United Irishmen) (1759–1832), Ulster Presbyterian banker and revolutionary
 * Billy Tennant (footballer) (William Tennant; 1865–1927), English footballer