Robert Dormer (1650–1726), of , Buckinghamshire and Lincoln's Inn Fields, was an English barrister, judge of the court of common pleas from 1706, and politician. He was a Member (MP) of the Parliament of England for Aylesbury from 22 February 1699 to 1700, for Buckinghamshire in the periods December 1701 – 1702 and 1705 – 11 February 1706 and for Northallerton on 23 November 1702 – 1705.