Robert Fulke Greville FRS (3 February 1751 – 27 April 1824) was a British Army officer, courtier and politician who sat in the House of Commons between 1774 and 1807.

He was commissioned as a cornet in the 10th Dragoons in 1768, and promoted to lieutenant in 1772;[1] he transferred to the 1st Foot Guards in April 1775[2] and became captain the same year, then lieutenant-colonel in 1777.

Greville's duties as an equerry did not prevent him starting a parliamentary career, initially as Member of Parliament for Warwick from 1774 to 1780, supporting the Tory government of Lord North.

He returned to the royal household as Groom of the Bedchamber from 1800 to 1818 (from 1812 at Windsor Castle after the final onset of George III's illness).

His brother Charles Francis had founded the port of Milford Haven and Robert's son and namesake attempted to make improvements to it.