John Fenn may refer to:
- John Fenn (antiquarian) (1739–1794), English antiquarian who edited and published the Paston Letters
- John Fenn (chemist) (1917–2010), American co-recipient of the Nobel Prize in Chemistry in 2002
- John Fenn (pirate) (died 1723), English pirate
- John Fenn (priest) (died 1615), English Roman Catholic priest and writer
Topics referred to by the same termThis disambiguation page lists articles about people with the same name. If an internal link led you here, you may wish to change the link to point directly to the intended article. Category: