Ian Stewart
Ian Stewart may refer to:
Military
- Ian Stewart (RAF officer), current United Kingdom National Military Representative, Supreme Headquarters Allied Powers Europe
- Ian MacAlister Stewart, brigadier general during the Second World War
- Ian Michael Stewart, former senior commander in the Royal Air Force
Politics
- Ian Stewart (Labour politician), Scottish politician
- Ian Stewart, Baron Stewartby, British Conservative Party politician and former MP for Hitchin, England
Sports
- Ian Stewart (athlete), Scottish Olympic athlete
- Ian Stewart (Australian rules footballer), member of the Australian Football Hall of Fame
- Ian Stewart (baseball), major league baseball player
- Ian Stewart (Northern Ireland footballer), member of the 1986 Northern Ireland Football World Cup team
- Ian Stewart (racing driver), Scottish Formula One driver
- Ian Stewart (Scottish footballer), Scottish football player and manager
Others
- Ian Stewart (mathematician), English academic and science fiction author
- Ian Stewart (musician), British musician and early member of the Rolling Stones
- Ian Stewart (police commissioner), former Commissioner of the Queensland Police Service
- Ian Stewart, founder of Gremlin Interactive and Zoo Digital
- Ian Stewart (priest), Dean of Brechin
- Ian Charles Stewart, entrepreneur and co-founder of Wired magazine
- Ian Duncan Stewart, or Ian Brady, British serial killer and author
- Ian Edward Stewart, English pianist and bandleader, Savoy Orpheans