German submarine U-202 was a Type VIIC U-boat of the Kriegsmarine during World War II. The submarine was laid down on 18 March 1940 by the Friedrich Krupp Germaniawerft yard at Kiel as yard number 631, launched on 10 February 1941, and commissioned on 22 March under the command of Kapitänleutnant Hans-Heinz Linder.

She sank nine ships totalling 34,615 gross register tons (GRT) and damaged four more totalling 35,427 GRT.

She was sunk on 2 June 1943 in the North Atlantic by depth charges and gunfire from British warships after a lengthy series of depth charge attacks. 18 men died, there were 30 survivors.

German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-202 had a displacement of 769 tonnes (757 long tons) when at the surface and 871 tonnes (857 long tons) while submerged. She had a total length of 67.10 m (220 ft 2 in), a pressure hull length of 50.50 m (165 ft 8 in), a beam of 6.20 m (20 ft 4 in), a height of 9.60 m (31 ft 6 in), and a draught of 4.74 m (15 ft 7 in). The submarine was powered by two Germaniawerft F46 four-stroke, six-cylinder supercharged diesel engines producing a total of 2,800 to 3,200 metric horsepower (2,060 to 2,350 kW; 2,760 to 3,160 shp) for use while surfaced, two AEG GU 460/8–27 double-acting electric motors producing a total of 750 metric horsepower (550 kW; 740 shp) for use while submerged. She had two shafts and two 1.23 m (4 ft) propellers. The boat was capable of operating at depths of up to 230 metres (750 ft).

The submarine had a maximum surface speed of 17.7 knots (32.8 km/h; 20.4 mph) and a maximum submerged speed of 7.6 knots (14.1 km/h; 8.7 mph). When submerged, the boat could operate for 80 nautical miles (150 km; 92 mi) at 4 knots (7.4 km/h; 4.6 mph); when surfaced, she could travel 8,500 nautical miles (15,700 km; 9,800 mi) at 10 knots (19 km/h; 12 mph). U-202 was fitted with five 53.3 cm (21 in) torpedo tubes (four fitted at the bow and one at the stern), fourteen torpedoes, one 8.8 cm (3.46 in) SK C/35 naval gun, 220 rounds, and a 2 cm (0.79 in) C/30 anti-aircraft gun. The boat had a complement of between forty-four and sixty.

Part of the 1st U-boat Flotilla, U-202 conducted nine patrols in the North Atlantic, the last three under the command of Kptlt. Günter Poser; she was a member of ten wolfpacks.

U-202's first patrol began when she left Kiel on 17 June 1941; it passed without incident and concluded with her entry into Brest in France on 23 July after 37 days at sea.

She had more success on her second outing; departing Brest on 11 August, attacking and sinking two ships east of Greenland and south of Iceland before returning to Brest on 17 September 1941.