German submarine U-1019 was a Type VIIC/41 U-boat of Nazi Germany's Kriegsmarine during World War II.

She was ordered on 13 June 1942, and was laid down on 28 April 1943, at Blohm & Voss, Hamburg, as yard number 219.

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.

Sixteen days into her patrol, 16 February 1945, U-1019 was attacked by a Polish manned Wellington of the 304/Q Squadron RAF west of the Hebrides, she suffered only moderate damage.

Of the 156 U-boats that eventually surrendered to the Allied forces at the end of the war, U-1019 was one of 116 selected to take part in Operation Deadlight.