List of shipwrecks in 1943

The list of shipwrecks in 1943 includes ships sunk, foundered, grounded, or otherwise lost during 1943.

Unknown date

 * SS America Maru (🇯🇵 Japan: World War II: The cargo ship was torpedoed and sunk between 27 January and 1 March by USS Nautilus (SS-168).
 * SS Cafernströn (🇸🇪 Sweden): World War II: The cargo ship was bombed and sunk at Gdynia, Poland by United States Army Air Forces aircraft.
 * SS Kaifuku Maru (🇯🇵 Japan): World War II: The cargo ship was torpedoed and sunk in the East China Sea by USS Seawolf (SS-197) between 5 October and 27 November.
 * SS Miyadonu Maru (🇯🇵 Japan): World War II: The cargo liner was torpedoed and sunk in the Pacific Ocean by USS Growler (SS-215) sometime between 17 February and 27 October.
 * MV Regensburg (🇩🇪 Germany): World War II: The cargo ship was intercepted in the Atlantic Ocean between Greenland and Iceland by HMS Glasgow (C21) and was scuttled by her crew.
 * USS Runner (SS-275) : World War II: The was sunk by enemy action in the Pacific Ocean sometime between 26 June and 31 July.
 * SS Silvaplana (🇩🇪 Germany): World War II: The cargo ship was intercepted by HMS Adventure (M23) in the Atlantic Ocean 200 nmi off Cape Finisterre, Spain and was scuttled by her crew.
 * SS Taiau Maru (🇯🇵 Japan): World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean by USS Gudgeon (SS-211) sometime between 1 September and 6 October.
 * SS Tateyama Maru (🇯🇵 Japan): World War II: The cargo ship was torpedoed and sunk in the Philippine Sea by USS Pickerel (SS-177) sometime between 10 July and 26 August.
 * SS Tamon Maru (🇯🇵 Japan): World War II: The cargo ship was torpedoed and sunk in the Pacific Ocean by USS Stingray (SS-186) before 12 June.
 * SS Thaddeus S. C. Lowe (🇺🇸 United States): World War II: The Liberty ship was damaged whilst loading landing ships in heavy seas and was declared a constructive total loss.
 * GS U-519 : World War II: The Type IXC submarine was lost on patrol in the Atlantic Ocean on or after 31 January with the loss of all 50 crew. Cause unknown.
 * SS Wuhu Maru (🇯🇵 Japan): World War II: The cargo ship was torpedoed and sunk in the East China Sea by USS Seawolf (SS-197).
 * SS Yamagibu Maru (🇯🇵 Japan): World War II: The cargo ship was torpedoed and sunk in the Celebes Sea by USS Pargo (SS-264) sometime between 13 June and 3 September.
 * SS Yamato Maru (1914) (🇯🇵 Japan): World War II: The ocean liner was torpedoed and sunk in the South China Sea with the loss of 27 of the 1,092 people on board.