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

This disambiguation page lists articles about people with the same name.
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