French admiral, the outstanding commander of the period when Louis XIV's navy was on the point of winning world supremacy.

Born into the old Norman nobility, Tourville learned seamanship on a Maltese frigate in the Mediterranean. He entered the French navy in 1666 and took part in Louis XIV's war against the Dutch (1672–78). Promoted to lieutenant general in 1682, he supervised shipbuilding and naval schools and participated in attacks on the Barbary pirates in Algiers and Tripoli.

At the outbreak (1689) of the War of the Grand Alliance (Grand Alliance, War of the) between France and the other major European powers, Tourville broke the English blockade of Brest, preventing an invasion of Brittany. For this he was promoted to vice admiral of the Mediterranean fleet and naval commander in chief. His victory over the Anglo-Dutch fleet off Beachy Head, near Sussex, on July 10, 1690, caused panic in London but was not followed up. After a skillful sea campaign in 1691, Tourville in 1692 was required to collaborate in an ill-planned landing in England; his fleet was annihilated at the Battle of La Hogue. He had, nevertheless, conducted a masterful fight; as a reward, Louis XIV made him a marshal of France (1693). He retired from the navy after the war ended in 1697.