T-20 armored tractor Komsomolets (Bronirovannyy gusenichnyy tyagach Komsomolets T-20), an armored continuous track tractor, the T-20 was a prime mover vehicle used by the Soviet Union during the Winter War and World War II.

The T-20 was designed in 1936 at the Ordzhonikidze Moscow Plant no.37. They were manufactured during 1937–1941 at Factory no. 37, as well as at STZ and GAZ.

The tractor was designed to tow light artillery pieces such as the 45mm anti-tank gun and the 120mm heavy mortar. The tractor could tow the weapons themselves plus a small quantity of ammunition, usually towed in a limber, along with up to six crewmen. Occasionally, two limbers were towed to increase the ammunition supply.

The forward compartment provided space for the driver and vehicle commander. It was fully armored and had a ball-mounted DT machine gun. The rear compartment held the gun crews, seated back-to-back in outward-facing bench seats. A canvas top could be erected for protection in poor weather.

Approximately 4401 T-20 tractors were built between 1937 and 1941.

Although the Komsomolets T-20 armored tractor was designed as a prime mover, some vehicles were used in combat during 1941. The tractor was also employed as a tankette.

The T-20 tractor was used by the Red Army during the Soviet invasion of Poland, the Winter War and during World War II. During Operation Barbarossa, some T-20 tractors were used as armored fighting vehicles, though after 1941 they were used only as artillery tractors.

Both Finland and Nazi Germany used captured vehicles.