John McCallum (1950–2025) was a Canadian politician.
John McCallum may also refer to: John McCallum (actor) (1918–2010), Australian actor John McCallum (Australian politician) (1892–1973), Australian politician John McCallum (badminton) (1883–1967), Irish badminton player and administrator John McCallum (naval architect) (1920–1995), Scottish naval architect John McCallum (sports writer) (1924–1988), American sportswriter and author John Donaldson McCallum (fl. 1881–1926), Scottish minister John McCallum (British politician) (1847–1920), Scottish soap manufacturer and politician
See also John MacCallum (1883–1957), Scottish rugby union player