John Sinclair
John Sinclair is the name of the following people:
- John Sinclair (economist) (1754–1835), Scottish economist and politician
- John Sinclair (environmentalist) (1939-2019), Australian environmental activist
- John Sinclair (anarchist) (born 1941), American writer and anarchist
- John Sinclair (musician) (born 1952), British rock musician
- John Archibald Sinclair, 3rd Viscount Thurso (* 1953), British politician, see John Thurso
- John McHardy Sinclair (1933–2007), British linguist
See also:
- Ghostbusters John Sinclair , German booklet series
