John Wozniak (born 1971) is an American musician and member of the band Marcy Playground.
John Wozniak may also refer to
John Wozniak (gridiron football) (1921–1982), American football player John Wozniak (American football coach) (born 1977), American football coach John N. Wozniak (born 1956), state senator in the U.S. state of Pennsylvania