John Long
John Long is the name of the following people:
- John Long (politician) (1785-1857), American politician (North Carolina)
- John Long (climber) (* 1953) American sport climber and author
- John Long (basketball player) (born 1956), American basketball player
- John A. Long (* 1957), Australian paleontologist
- John B. Long (1843-1924), American politician (Texas)
- John D. Long (1838–1915), American politician (Massachusetts)
- John Harper Long (1856–1918), American chemist
- John Luther Long (1861–1927), American lawyer and writer