USS Felicia (SP-642) was a steam yacht acquired by the United States Navy during World War I.

(The other USS Felicia, PYc-35, was built in 1931, and served in World War II.)

Based out of Newport, Rhode Island, Felicia patrolled the New England coast, on duty with the 2d Naval District, until August 39, 1918, when she collided with a submarine in heavy fog off Montauk Point.

Felicia was in repair or laid up at various yards until decommissioned at Brooklyn, 25 August 1919.

Felicia was stricken from the list of Naval vessels in September 1919 and sold 25 March 1920.