RMS Ophir was a twin-screw ocean liner of the Orient Steam Navigation Company of London, which worked company's London — Aden — Colombo — Australia route from 1891. In 1901 she served as the Royal yacht HMS Ophir. In 1915 she was requisitioned by the Admiralty and was an armed merchant cruiser until 1918, when she was returned to her owners. She was not restored to passenger service, but was scrapped in 1922.