The 57th Otaman Kost Hordiienko Motorized Brigade was a brigade of the Ukrainian Ground Forces that was formed in Kirovohrad Oblast, Ukraine in November 2014. The brigade initially consisted of three volunteer Territorial Defense Forces battalions, and it was deployed to fight in the Donbas War in the summer of 2015. In May 2019, the brigade was named for the Cossack ataman Kost Hordiienko, and it was highly decorated for its liberation of Kherson Oblast during the Russo-Ukrainian War.