USS Psyche V (SP-9) was an armed motorboat that served in the United States Navy as a patrol vessel from 1917 to 1919.

Psyche V was built in 1911 by Fred S. Nock at East Greenwich, Rhode Island, as the private wooden motorboat Achelous.

She had been renamed Psyche V by the time the U.S. Navy purchased her from her owner, W. S. Bentham of New York City, on 23 April 1917 for World War I service.

Psyche V was assigned to Squadron 8 in the 3rd Naval District for section patrol in the vicinity of New York City.

Psyche V was transferred to the United States Department of Commerce on 16 June 1919.