USS Astrea (SP-560) was a United States Navy patrol vessel in commission from 1917 to 1919 or 1920.

In May 1918, Astrea was shipped across the Atlantic Ocean to France as deck cargo aboard the troop transport USS Leviathan (ID-1326).

In France, she served at Brest as a tender to troop transports through the end of World War I and apparently into the first half of 1919.

She may have been carried back to the United States as deck cargo aboard the Naval Overseas Transportation Service cargo ship USS Teresa (ID-4478) in June 1919, although she may also have been serving on aviation support duties at Brest as late as October 1919.

Eventually, Astrea did return to the United States, where she was sold to S. P. Greenlee of Baltimore, Maryland, on 31 March 1920.