The T-44-122 was a Soviet medium tank which was supposed to replace T-34 in service as the main tank of the Red Army. The T-44-122 is the third prototype after the first two prototypes armed with 85 mm D-5T guns. The 122 mm D-25-44T gun was used, unlike the regular D-25T it was using a single piece ammunition to increase rate of fire aswell as double buffle muzzle break. The tank underwent first trials between February and March 1944 but unsuccessfuly as the gun failed and had to be returned to factory for repairs. Second trials were conducted between April and May 1944 where the T-44-122 competed with a captured German Panther tank and second of the 85 mm armed T-44 prototypes. The T-44-122 had practical rate of fire of two to three rounds per minute and very limited ammo storage of only 24 rounds, which were both deemed insufficient. As a result all further development was suspended and only development of the 85 mm armed variant continued.

The T-44-122 was introduced in Update 1.55 "Royal Armour" as a GE premium. Unlike the T-44, the T-44-122 features a driver hatch weakspot where the armour is partially flat and extending from the hull, but comes with a 122 mm gun instead, giving the tank a very high boost in firepower compared to its previous 85 mm cannon. The mobility and armour however are excellent and the tank could be played as a sniper due to its powerful gun, or as a brawler seeking cover while reloading before advancing further.