USS Rutoma (SP-78) was an armed motorboat that served in the United States Navy as a patrol vessel from 1917 to 1919. Rutoma was built as the private motorboat Manchonac in 1910 by the Seabury Company at Morris Heights, New York. She had been renamed Rutoma by the time the U.S. Navy purchased her from her owner, Graham T. Thompson of New Haven, Connecticut, on 18 April 1917 for World War I service as a patrol boat. She was commissioned on 26 April 1917 as USS Rutoma (SP-78) with Ensign George D. Atwood, USNRF, in command.