John Reardon (born 1975) is an actor.
John Reardon may also refer to:
Beans Reardon (born John Reardon; 1897–1984), baseball umpire John Reardon (baritone) (1930–1988), opera baritone John Riordan (banker), banker John P. Reardon, American university administrator Jack Reardon (politician) (born John E. Reardon; 1943–1988), American politician