| Unit Name: | 57th Motorized Brigade |
| Native Name: | Ukrainian: 57-та окрема мотопіхотна бригада |
| Dates: | November 2014present |
| Country: |  |
| Branch: | Ground Forces |
| Type: | Motorized infantry |
| Size: | Brigade |
| Command Structure: | Operational Command South |
| Garrison: | Kropyvnytskyi |
| Battles: | War in Donbas 2022 Russian invasion of Ukraine |
| Current Commander: | Denys Yaroslavsky[1] |
The 57th Otaman Kost Hordiienko Motorized Brigade is a formation of the Ukrainian Ground Forces. The brigade was formed beginning in November 2014 in the city of Kropyvnytskyi in Kirovohrad Oblast. Initially, the brigade consisted of three volunteer territorial defence battalions. By the summer of 2015, the brigade was deployed to fight in the war in Donbas. The ground forces plan to mechanize the brigade in the future.
On 6 May 2019, the brigade received the honorary name of Kost Hordiienko, a Zaporozhian Cossack Kosh otaman of the 18th century.[2]
During the 2022 Russian invasion of Ukraine, the brigade received the recently established "For Courage and Bravery" award by Ukrainian president Volodymyr Zelenskyy for liberating a number of settlements in the Kherson Oblast. The unit was also noted for its servicemembers having been previously awarded 275 state awards.[3]
As of 2024, the brigade's structure was as follows:[4]