John Sim

John Sim (or similar) may refer to:

Politics

 * John Symme, 14th-century English politician, MP for Canterbury
 * John Peter Sim (1917–2015), Australian politician known as Peter Sim

Sports

 * Jock Sim (John Sim, 1922–2000), Scottish footballer (Brighton & Hove Albion)
 * Johnny Simm (1929–2018), English footballer (Bolton Wanderers, Bury, Bradford City)
 * Jon Sim (born 1977), Canadian ice hockey player

Others

 * John Simm (born 1970), English actor
 * Jack Sim, Singaporean businessman