German submarine U-1198 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II.

She was ordered on 25 August 1941, and was laid down on 13 March 1943 at F Schichau GmbH, Danzig, as yard number 1568.

She was launched on 30 September 1943 and commissioned under the command of Oberleutnant zur See Gerhard Peters on 9 December 1943.

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 AEG GU 460/8-276 double-acting electric motors producing a total of 750 metric horsepower (550 kW; 740 shp) for use while submerged.

Of the 156 U-boats that eventually surrendered to the Allied forces at the end of the war, U-1198 was one of 116 selected to take part in Operation Deadlight.