German submarine U-1102 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II.

She was launched on 15 January 1944 and commissioned on 22 February 1944 under the command of Oberleutnant zur See Bernhard Schwarting.

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 and two SSW GU 343/38-8 double-acting electric motors producing a total of 750 metric horsepower (550 kW; 740 shp) for use while submerged.

The submarine was capable of operating at depths of up to 230 metres (750 ft), had a maximum surface speed of 17.6 knots (32.6 km/h; 20.3 mph) and a maximum submerged speed of 7.5 knots (13.9 km/h; 8.6 mph).When submerged, the U-boat could operate for 80 nautical miles (150 km; 92 mi) at 4 knots (7.4 km/h; 4.6 mph) and when surfaced, she could travel 8,500 nautical miles (15,700 km; 9,800 mi) at 10 knots (19 km/h; 12 mph).

[2] U-1102 took part in the Operation Hannibal and sailed on the 1 January 1945 from Gotenhafen to Swinemünde[4] and finally to Kiel where she surrendered.