German submarine U-146 was a Type IID U-boat of Nazi Germany's Kriegsmarineduring World War II. Her keel was laid down on 30 March 1940 by Deutsche Werke in Kiel as yard number 275. She was launched on 21 September 1940 and commissioned on 30 October with Eberhart Hoffmann in command. U-146 began her service life with the 1st U-boat Flotilla. She was then assigned to the 22nd flotilla and subsequently to the 3rd flotilla where she conducted two patrols, sinking one ship, in 1941. She spent the rest of the war as a training vessel, moving back to the 22nd flotilla. She was scuttled in May 1945.