Peter Sinclair may refer to:
Politics
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Peter Sinclair (governor) (born 1934), Rear admiral, first commandant of ADFA, Governor of New South Wales
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Peter Sinclair Sr. (1819–1906), Canadian Member of Parliament for Queen's County, 1873–1878
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Peter Sinclair Jr. (1887–1938), Canadian Member of Parliament for Queen's, 1935–1938
Others
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Peter Sinclair (broadcaster) (1938–2001), New Zealand television personality
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Peter J. N. Sinclair
Peter James Niven Sinclair (18 September 1946 – 31 March 2020)''Old Greshamian Club Address Book'' (Cheverton & Son Ltd., Cromer, 1999) p. 43 was a British economist. He was Professor, and subsequently Emeritus Professor, in Economics at t ...
(1946–2020), British economist
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Peter Sinclair (environmental activist)
Peter Sinclair from Midland, Michigan (born 1953), is an environmental activist whose focus is on climate change. He is a YouTube blogger, explorer and founder of the ''ClimateCrocks.com'' website. Together with climate researchers he's traveled to ...
(born 1953), American climate and environmentalist videographer
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Peter Sinclair (footballer)
Peter Sinclair (born 19 May 1947) is a former Australian rules football
Australian football, also called Australian rules football or Aussie rules, or more simply football or footy, is a contact sport played between two teams of 18 player ...
(born 1947), Australian football player
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Pete Sinclair (writer), British radio and television writer
{{hndis, name = Sinclair, Peter