The 30th Prince Konstanty Ostrogski Mechanized Brigade is a formation of the Ukrainian Ground Forces. The full name of the unit is 30th Independent Mechanized Brigade "Konstanty Ostrogski".

The 8th Tank Army was one of ten Soviet tank armies. It was formed from the 52nd Army after the end of World War II. It was stationed around the city of Zhytomyr, in the western Ukrainian SSR, part of the Carpathian Military District. During the Cold War, the army was involved in the crushing of the Hungarian Revolution of 1956, Operation Whirlwind, and the crushing of the Prague Spring, Operation Danube. After the Dissolution of the Soviet Union, the 8th Tank Army became the Ukrainian 8th Army Corps.