John Grainger (disambiguation)
John Grainger was an Irish cleric and antiquarian.
John Grainger or Granger may also refer to:
- John Harry Grainger, architect and civil engineer
- John Grainger (footballer, born 1912), English professional footballer
- John Grainger (footballer, born 1924), English professional footballer
- John Grainger (politician) (1803–1872), real estate investor and member of the South Australian Legislative Council
- John Granger, speaker and writer
- John Granger (footballer), Scottish footballer