German submarine U-1015 was a Type VIIC/41 U-boat of Nazi Germany's Kriegsmarine during World War II.

She was ordered on 23 March 1942, and was laid down on 5 April 1943, at Blohm & Voss, Hamburg, as yard number 215.

She was launched on 7 February 1944, and commissioned under the command of Oberleutnant zur See Hans-Heinz Boos on 23 March 1944.

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 BBC GG UB 720/8 double-acting electric motors producing a total of 750 metric horsepower (550 kW; 740 shp) for use while submerged.

Only 14 survived, including her commander, Oberleutnant zur See Hans-Heinz Boos, out of a crew of 50.