USS Merganser

USS Merganser may refer to:


 * USS Merganser (AM-135), was originally the commercial trawler Annapolis acquired by the US Navy 3 January 1942 and decommissioned 1 May 1944


 * USS Merganser (AM-405), would have been a minesweeper but the contract for her construction was canceled 12 August 1945


 * USS Merganser (AMS-26), was launched as YMS-417 29 June 1944, redesignated AMS‑26 and named Merganser 17 February 1947 and decommissioned 2 April 1958.