Sir John Aubrey, 6th Baronet (4 June 1739 – 14 March 1826) was a British Tory politician.

Baptised in Boarstall in Buckinghamshire on 2 July 1739, he was the son of Sir Thomas Aubrey, 5th Baronet and Martha, daughter of Richard Carter, of Chilton, Buckinghamshire, Chief Justice of Glamorgan.

[1][2] Aubrey was educated at Westminster School and at Christ Church, Oxford, where he graduated as a Doctor of Civil Laws in 1763.

On 9 March 1771, he married firstly Mary Colebrooke, daughter of Sir James Colebrooke, 1st Baronet and Mary Skynner, and on 26 May 1783 secondly his cousin[3] Martha Catherine (d. 1815), daughter of George Richard Carter, of Chilton, Buckinghamshire, and a descendant, through her mother, Julia (née Spilman), of the Willys baronets.

By his first wife, he had a son, John (1771-1777), who died of accidental poisoning; he also had an illegitimate daughter, Mary, who married Samuel Whitcombe, of Hempstead Court, Gloucestershire.