German submarine U-546
 German submarine U-546 was a Type IXC/40 U-boat operated by Nazi Germany's Kriegsmarine during World War II. She was laid down at the Deutsche Werft in Hamburg as Werk 367 on 6 August 1942 launched on 17 March 1943 and commissioned on 2 June 1943 under Oberleutnant zur See Paul Just. The U-boat was a member of three wolf packs.U-546 was responsible for the last combat sinking of a United States Navy vessel in the Atlantic Theatre during Operation Teardrop.