John Pepper (1886–1938) was a Hungarian-Jewish Communist politician.
John Pepper may also refer to:
John E. Pepper Jr., American businessman John Henry Pepper (1821–1900), British scientist and inventor John Randolph Pepper (born 1958), photographer and theatre director John Pepper (English MP) (1537–1603), English politician John Pepper (cricketer) (1922–2007), English cricketer