William Allan
William Allan may refer to:
Politicians
- George William Allan, Canadian politician
- George William Allan , Canadian politician
- William Allan , Canadian banker, businessman and politician
- William Allan , Liberal Party politician in the United Kingdom
- William Allan , pastoralist and politician in Queensland, Australia
Sportspeople
- William Allan , Scottish goalkeeper for Falkirk, Rangers and Hibernian
- William Allan , Scottish defender for Hamilton and Motherwell
- Willie Allan, Scottish footballer
- Wee Willie Allan, American dirt modified racing driver
Others
- William Allan
- William Allan , Scottish classicist
- William Allan , American physician and geneticist
- William Allan , Scottish historical painter
- William Allan , British trade unionist
- William Evan Allan, Australian military figure, seeing service in WWI and WWII
- William Allan of Glen, Lord Provost of Edinburgh