Ostaphii "Ostap" Dashkevych (Ukrainian: Остафій Дашкевич; born in Ovruch 1470 – died after 1535) is one of the earliest recorded leaders of an organized Cossack defense force.
According to the folk tale, the prince perished in his youth leaving on the island his wife (supposedly of Polish origin) and his son who eventually became a glorious Cossack hetman.
[citation needed] According to Seweryn Uruski [pl], a Polish heraldry specialist, Dashkevych belonged to the Leliwa coat of arms.
His estate eventually transformed into the village of Voskresenska Slobidka and later gave a name to the Voskresenka neighborhood which is now a part of modern Kyiv on the left bank of Dnieper.
Dashkevych's successful rout of the Crimean Tatars' attempt to sack Cherkasy is commemorated in Tomasz Padura's ballad "Duma Rycerska".