The 4th Separate Guards Motor Rifle Brigade (Russian: 4-я отдельная гвардейская мотострелковая бригада, 4 омсбр; Military Unit Number 74347) is a military unit of Russian Ground Forces.

[3][4] In January 2023, the brigade joined the Russian Armed Forces as part of the 2nd Army Corps.

[5] In May 2023, the brigade took part in the battle of Bakhmut, where it replaced the Wagner group in the Klishchiivka sector and suffered heavy casualties, including the brigade's commander Vyacheslav Makarov.

[6][7] On 10 May 2024, the Institute for the Study of War reported that the brigade is operating near the village of Ivanivske.

[9] In late 2024, the Wagner Legion, a unit formed by the former Wagner group commanders[10], reportedly joined the 4th Brigade as the 1st Motor Rifle Battalion.