John Gilman

John Gilman may refer to:

• John Gilman (activist) (1920–2011), American activist
• John J. Gilman (1925–2009), American material scientist
• John M. Gilman (1824–1906), American politician and lawyer
• John Taylor Gilman (1753–1828), American farmer, shipbuilder and politician
• John Gillman – civilian name of Homelander, a fictional character from The Boys
• Jonathan Gillman (born 1935), Australian sharp shooter