German submarine U-827 was a Type VIIC/41 U-boat of Nazi Germany's Kriegsmarine during the Second World War. She was ordered on 8 June 1942, laid down on 7 August 1943 at Schichau-Werke, Danzig, West Prussia.
She had two commanders, from 25 May 1944 until March 1945 it was Kapitänleutnant Wilhelm Hunck and then, from 26 April 1945 until 5 May 1945, she had Kapitänleutnant Kurt Baberg.
The U-boat saw no action and was scuttled on 5 May 1945 in Flensburg Fjord. The wreck was broken up in 1948.
Like all Type VIIC/41 U-boats, U-827 had a displacement of when at the surface and while submerged. She had a total length of , a pressure hull length of , a beam of , and a draught of . The submarine was powered by two Germaniawerft F46 supercharged six-cylinder four-stroke diesel engines producing a total of and two BBC GG UB 720/8 double-acting electric motors producing a total of for use while submerged. The boat was capable of operating at a depth of .
The submarine had a maximum surface speed of and a submerged speed of . When submerged, the boat could operate for at ; when surfaced, she could travel at . U-827 was fitted with five torpedo tubes (four fitted at the bow and one at the stern), fourteen torpedoes, one SK C/35 naval gun, (220 rounds), one Flak M42 and two C/30 anti-aircraft guns. Its complement was between forty-four and sixty.