German submarine U-249 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II.

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.

The boat's first patrol was preceded by a pair of short trips between Kiel in Germany, and Kristiansand and Bergen in Norway.

She left Bergen on 3 April 1945[4] and arrived at Portland, UK, flying the black flag of surrender on 10 May.

[5] She was then briefly used by the British as the research ship N 86 before being transferred to Loch Ryan in Scotland for Operation Deadlight.

[1] In May 2013 her official visitors' book, and Captain Kock's fixed-focus Zeiss binoculars, taken as spoils of war by the British officer who commanded her prize crew, were shown on the BBC television series Antiques Roadshow by the officer's son, himself a former submarine captain, who used the binoculars during his career.