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