| Unit Name: | Union of Cossacks |
| Start Date: | 28 June 1990 |
| Country: | Russia |
| Allegiance: | Transnistria |
| Specialization: | --> |
| Colours: | --> |
| Colours Label: | --> |
The Union of Cossacks (UoC) is a movement and armed organization of Russian and Central Asian cossacks established at a conference in Moscow on 28 June 1990, which sought to unite the Cossack forces of the earlier Russian Empire.[1] The UoC defined itself as pro-communist, in contrast with the Union of Cossack Hosts whose stance favored the Russian Federation and opposed communism.[2]
The force was sent to Transnistria to fight as volunteers in the Transnistria War from 2 November 1990 to 21 July 1992.[3]