German submarine U-606 was a Type VIIC U-boat built for Nazi Germany's Kriegsmarine for service during World War II.

She was laid down on 12 March 1941 by Blohm & Voss, Hamburg as yard number 582, launched on 27 November 1941 and commissioned on 22 January 1942 under Oberleutnant zur See Hans Klatt.

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

[2] 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).

Along with U-92, U-186, U-225, U-332, U-529, U-600, U-604, U-623, U-628, U-653 and U-753 she attacked Convoy ON 166 and was very successful sinking the British Empire Redshank and US ship Chattanooga City and damaging US ship Expositor (finished by U-303) on 22 February, before being damaged by depth charges launched from the destroyer ORP Burza.