German submarine U-872 was a long-range Type IXD2 U-boat built for Nazi Germany's Kriegsmarine during World War II.
She was ordered on 25 August 1941, and was laid down on 23 December 1942 at DeSchiMAG AG Weser, Bremen, as yard number 1080. She was launched on 20 October 1943 and commissioned under the command of Oberleutnant zur See Peter-Otmar Grau on 10 February 1944.
German Type IXD2 submarines were considerably larger than the original Type IXs. U-872 had a displacement of when at the surface and while submerged. The U-boat had a total length of , a pressure hull length of , a beam of , a height of , and a draught of . The submarine was powered by two MAN M 9 V 40/46 supercharged four-stroke, nine-cylinder diesel engines plus two MWM RS34.5S six-cylinder four-stroke diesel engines for cruising, producing a total of for use while surfaced, two Siemens-Schuckert 2 GU 345/34 double-acting electric motors producing a total of for use while submerged. She had two shafts and two propellers. The boat was capable of operating at depths of up to .
The submarine had a maximum surface speed of and a maximum submerged speed of . When submerged, the boat could operate for at ; when surfaced, she could travel at . U-872 was fitted with six torpedo tubes (four fitted at the bow and two at the stern), 24 torpedoes, one SK C/32 naval gun, 150 rounds, and a Flak M42 with 2575 rounds as well as two C/30 anti-aircraft guns with 8100 rounds. The boat had a complement of fifty-five.
On 29 July 1944, U-872 was badly damaged by bombs at Bremen in a USAAF raid. She was taken out of service on 10 August 1944 and broken up.