German submarine U-52 was a type VIIB U-boat of Nazi Germany's Kriegsmarine during World War II.

She undertook eight war patrols in the Battle of the Atlantic, she sank thirteen ships before being sunk at Danzig in 1945 and broken up in 1946 / 1947.

The submarine was powered by two MAN M 6 V 40/46 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 BBC GG UB 720/8 double-acting electric motors producing a total of 750 metric horsepower (550 kW; 740 shp) for use while submerged.

The most southerly point of the patrol was reached on 1 September, the same day that Germany began the invasion of Poland.

Foray number five was in terms of tonnage sunk, her most successful; she destroyed the Gogovale on 4 August 1940 about 300 nautical miles (560 km; 350 mi) west southwest of Bloody Foreland (County Donegal in Ireland).

Continuing her hunting in mid-Atlantic, U-52 sank the Ringhorn on 4 February 1941 and the Canford Chine about 165 nautical miles (306 km; 190 mi) southwest of Rockall, (a tiny outcrop), on the tenth.

[4] Her last recorded victim was the Ville de Liège, a Belgian-registered vessel which was successfully attacked about 700 nautical miles (1,300 km; 810 mi) east of Cape Farewell, (southern Greenland)[5] on 14 April.