German submarine U-848 was a Type IXD2 U-boat built for Nazi Germany's Kriegsmarine during World War II.

Laid down in Bremen and commissioned on 20 February 1943, the boat was a long-range Type IX, with four bow and two stern torpedo tubes.

She was commanded throughout her brief service life by Korvettenkapitän Wilhelm Rollmann, who led her through her sea trials and onto her first war patrol on 18 September 1943.

The submarine was powered by two MAN M 9 V 40/46 supercharged four-stroke, nine-cylinder diesel engines plus two MWM RS34.5S six-cylinder four-stroke diesel engines for cruising, producing a total of 9,000 metric horsepower (6,620 kW; 8,880 shp) for use while surfaced, two Siemens-Schuckert 2 GU 345/34 double-acting electric motors producing a total of 1,000 shaft horsepower (1,010 PS; 750 kW) for use while submerged.

On 2 November 1943, she torpedoed and sank the unescorted 4,573 GRT British steamship Baron Semple NW of Ascension Island.