John Marston may refer to:

• John Marston (playwright) (1576–1634), English playwright, poet
• John Marston (sailor) (1795–1885), United States Navy officer
• John Westland Marston (1819–1890), English dramatist
• John Marston (businessman) (1836–1918), English
• John Marston (USMC) (1884–1957), United States Marine Corps officer
• John Marston (cricketer) (1893–1938), Argentine-born English cricketer
• Jack Marston or John Marston (1948–2013), English rugby league footballer
• John Marston (Red Dead), a protagonist in the Red Dead Redemption series

• John Marsden