German submarine U-1107 was a Type VIIC/41 U-boat built for Nazi Germany's Kriegsmarine for service during World War II.

[3] The submarine was powered by two Germaniawerft F46 supercharged six-cylinder four-stroke 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) 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.

When submerged, the boat could operate for 80 nautical miles (150 km; 92 mi) at 4 knots (7.4 km/h; 4.6 mph); when surfaced, she could travel 8,500 nautical miles (15,700 km; 9,800 mi) at 10 knots (19 km/h; 12 mph).

In one patrol she sank two merchant ships, for a total of 15,209 gross register tons (GRT).

Sources agree that U-1107 was sunk on 30 April 1945 in the Bay of Biscay west of Brest, but differ as to the exact location of the sinking and the immediate cause: according to one source, U-1107 was sunk at position 48°12′N 05°42′W / 48.200°N 5.700°W / 48.200; -5.700 by a homing torpedo from a US Navy Liberator of VP-103 with all hands lost,[1] whereas another source reports U-1107 being sunk at position 48°00′N 06°30′W / 48.000°N 6.500°W / 48.000; -6.500 by one or more out of 24 bombs dropped by USN Catalina 'R' of VPB-63, flown by Lt. F.G. Lake, on a MAD Rover patrol with 37 submarine crew killed and an unknown number surviving.