William or Willie Waddell may refer to:
Willie Waddell (1921–1979), Scottish footballer and manager for Rangers F.C. Willie Waddell (footballer, born 1919) (1919–1979), less well known Scottish footballer, played for Aberdeen and Kettering Town William Bradford Waddell (1807–1872), founder, owner, and operator of the Pony Express William B. Waddell (politician) (1857—1942), Canadian politician William Bell Waddell (1828–1897), American politician and judge from Pennsylvania William Gillan Waddell (1884–1945), classical scholar and translator