Jim Haynes was an American-born figure in the British "underground" and alternative/counter-culture scene of the 1960s.
Jim or James Haynes may also refer to: Jim Haynes (writer), Australian writer James Haynes (American football), American football linebacker James Haynes (cricketer), English cricketer James Haynes (writer) (1788–1851), Irish journalist and playwright J. C. Haynes (James Clark Haynes), mayor of Minneapolis