John Collett may refer to:
- John A. Collett (1908–1942), namesake of the USS Collett, a World War II-era destroyer
- John Collett (artist) (1725–1780), English artist
- John Collett (composer) (c1735-1775), British violinist and composer
- John Collett (MP) (1798–1856), Irish Whig politician
This disambiguation page lists articles about people with the same name.
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