McIlwain
McIlwain is a surname. Notable people with the surname include:
- Alfie McIlwain, English actor
- Charles Howard McIlwain, American historian and political scientist
- Dallas McIlwain, Australian rugby league player
- David McIlwain, English science fiction writer
- Douglas McIlwain, English local politician Mayor of Huntingdon
- James McIlwain, American ophthalmologist
- Serena McIlwain, American government official
- Stover McIlwain, American baseball player
- Wally McIlwain, American football player
- Zach McIlwain, American national veterans advocate