William Waldegrave, 1st Baron Radstock GCB (9 July 1753 – 20 August 1825) was the Governor of Newfoundland and an Admiral in the Royal Navy. Waldegrave was the second son of John Waldegrave, 3rd Earl Waldegrave and Elizabeth (née Gower). Joining the navy at age 13 in 1766, Waldegrave rose rapidly through the ranks, receiving his own command, the Zephyr in 1775, and being promoted to Vice-Admiral in 1795. He was the third in command on the British side at the Battle of Cape St. Vincent in February 1797, and was offered a baronetcy for the role he played in the battle. Waldegrave declined the offer (on the grounds that as a son of an earl, he already held a higher station), and was appointed the Governor of Newfoundland, Saint-Pierre and Miquelon, on 16 May 1797.