German submarine U-632 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II. The submarine was laid down on 4 September 1941 at the Blohm & Voss yard at Hamburg, launched on 27 May 1942, and commissioned on 23 July 1942 under the command of Oberleutnant zur See Hans Karpf.
Attached to 5th U-boat Flotilla based at Kiel, U-632 completed her training period on 31 December 1942 and was assigned to front-line service.
German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-632 had a displacement of when at the surface and while submerged. She had a total length of , a pressure hull length of , a beam of , a height of , and a draught of . The submarine was powered by two Germaniawerft F46 four-stroke, six-cylinder supercharged diesel engines producing a total of for use while surfaced, two BBC GG UB 720/8 double-acting electric motors producing a total of for use while submerged. She had two shafts and two propellers. The boat was capable of operating at depths of up to .
The submarine had a maximum surface speed of and a maximum submerged speed of . When submerged, the boat could operate for at ; when surfaced, she could travel at . U-632 was fitted with five torpedo tubes (four fitted at the bow and one at the stern), fourteen torpedoes, one SK C/35 naval gun, 220 rounds, and one twin C/30 anti-aircraft gun. The boat had a complement of between forty-four and sixty.
Operating from Brest, France, U-632 went on two war patrols. On the second patrol, while operating against Convoy HX 231, U-632 sank the Dutch cargo ship after chasing her for more than nine hours and having twice missed her target. Later that day Liberator of No. 86 Squadron RAF detected U-632 and sank her with five depth charges southwest of Iceland in position on 6 April 1943. All 48 crew members were killed in the attack.