Sir Peter Halkett, 6th Baronet (1765–1839) was a Royal Navy officer.

Peter Halkett may also refer to:

• For Peter Halkett, the boat designer, see Halkett boat
• Sir Peter Halkett, 1st Baronet (c. 1660–1746), List of members of the 1st Parliament of Great Britain, of the Halkett baronets
• Sir Peter Halkett, 2nd Baronet (1695–1755), of the Halkett baronets, MP for Stirling Burghs
• Sir Peter Halkett, 3rd Baronet (died 1792), of the Halkett baronets
• Sir Peter Arthur Halkett, 8th Baronet (1834–1904), of the Halkett baronets

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