The T-34 (1941) 1st Guards Tank Brigade is a special T-34 (1941), which is the second variant of the T-34 medium tank family that served in the 1st Guards Tank Brigade (1-ю гвардейскую танковую бригаду). The 1st Guards Tank Brigade originally started as the 4th Tank Brigade, which was formed at Prudboy in the Stalingrad region. Equipped with T-34 and KV-1 tanks, the brigade saw extensive combat during the Battle of Moscow and in recognition of its combat prestige was renamed by Order No. 337 with the title of "Guards" as the 1st Guards Tank Brigade, the very first in the Red Army. The 1st Guards Tank Brigade would continue to see combat for the remainder of World War II.

Introduced in Update 1.41, the T-34 (1st Gv.T.Br.) is a premium version of the T-34 (1941) painted in the colours of the 1st Guards Tank Army. The playstyle is largely identical to the standard variant.

The T-34 (1st Gv.T.Br.) was sold as a premium pack until it was withdrawn from the store following the 2018 Winter sales. It was later made available in-game for Golden Eagles for a limited time during the "Defender of the Fatherland" mini-events in 2018, 2019 and 2020, the "80th Anniversary of the Battle of Moscow" mini-event in 2021, and the "Defender Special" mini-event in 2023.