USS Eaglet (SP-909), later redesignated YP-909, was an armed motorboat that served in the United States Navy as a patrol vessel from 1917 to 1921. Eaglet was built as a civilian motorboat in either 1909 or 1911 by George Lawley & Son at Neponset, Massachusetts. The U.S. Navy acquired her from her owner, F.L. Budlong of Providence, Rhode Island, on 16 June 1917 for use as a patrol boat during World War I. She was commissioned on 29 June 1917 as USS Eaglet (SP-909).