George Pitt-Rivers, 4th Baron Rivers (16 July 1810 – 28 April 1866), known as George Beckford until 1828, was a British peer and politician. He held a place as a Lord-in-waiting in several governments, migrating from the Tory to the Liberal Party over the course of his career. He commanded the Dorsetshire Yeomanry Cavalry for a decade. His four sons all suffered from a lung disease, and only the youngest briefly survived him to inherit the barony.