USS Magpie may refer to one of the following ships of the United States Navy:
, built as City of San Pedro in 1936 by Harbor Boat Building Co., Terminal Island, California USS Magpie (AM-418), construction was canceled 11 August 1945 , laid down as YMS-400 by Henry B. Nevins, Inc., City Island, New York , the former LCI(L)-944; renamed and reclassified 7 March 1952; scrapped after a brief period of operations near the Panama Canal