William McAlpine

William McAlpine may refer to:


 * William J. McAlpine (1812–1890), American civil engineer
 * Sir William McAlpine, 6th Baronet (1936–2018), British businessman
 * William McAlpine (tenor) (1922–2004), Scottish tenor
 * William H. McAlpine (1847-1905) American minister and educator