German submarine U-2344 was a Type XXIII U-boat of Nazi Germany's Kriegsmarine during World War II.

She was launched on 24 October 1944 and commissioned under the command of Oberleutnant zur See Hermann Ellerlage on 10 November of that year.

The submarine was powered by one MWM six-cylinder RS134S diesel engine providing 575–630 metric horsepower (423–463 kilowatts; 567–621 shaft horsepower), one AEG GU4463-8 double-acting electric motor electric motor providing 580 PS (430 kW; 570 shp), and one BBC silent running CCR188 electric motor providing 35 PS (26 kW; 35 shp).

U-2344 never undertook an operational patrol, and was lost on 18 February 1945 after a collision with one of her sister ships, U-2336.

She sank quickly in position 54°16′00″N 11°48′30″E / 54.26667°N 11.80833°E / 54.26667; 11.80833, taking 11 of the 14 crew members aboard to the bottom with her.