The 4th Queen's Own Hussars was a cavalry regiment in the British Army, first raised in 1685. It saw service for three centuries, before being amalgamated into The Queen's Royal Irish Hussars in 1958. The regiment was first raised as The Princess Anne of Denmark's Regiment of Dragoons in 1685, by the regimenting of various independent troops, and ranked as the 4th Dragoons. In 1751, it was formally titled as the 4th Regiment of Dragoons, and in 1788 named for Queen Charlotte as the 4th (Queen's Own) Regiment of Dragoons.