William Mackinnon
William, Bill, Billy, Willie or Will Mackinnon, MacKinnon or McKinnon may refer to:
Politicians
- William Alexander Mackinnon , British politician and South Australia colonisation commissioner
- William Alexander Mackinnon , British politician
- William S. McKinnon, American politician in Ohio
- William F. MacKinnon, Canadian politician
- Bill McKinnon , Scottish-born Australian member of the Tasmanian House of Assembly
Military
- Sir William Alexander Mackinnon , Director-General of British Army Medical Services
- Sir William Henry Mackinnon, British Army general
Sportsmen
- Billy MacKinnon, Scottish footballer for Queen's Park and Scotland national team in 1870s
- William McKinnon , Scottish footballer for Dumbarton and Scotland national team in 1880s
- Willie MacKinnon, American player in 1974 College Division East for Vermont Catamounts men's ice hockey#All-Americans
- Will MacKinnon, American gold medalist in Ice hockey at the 2016 Winter Youth Olympics#Events
Others
- Sir William Mackinnon, 1st Baronet, Scottish ship-owner and businessman
- *, Uganda Railway Lake Victoria ferry named after him
- William MacKinnon , minister and Moderator of the Free Church of Scotland
- William McKinnon , Australian police officer primarily within the Northern Territory
- Bill McKinnon , Australian Secretary of Department of Immigration and Ethnic Affairs
- William P. MacKinnon, American historian of Mormons and Utah