Radko is a derivative name formed with the diminutive suffix -ko from the shortened name Rad or Radyо. The highest recorded instances of the name Radko are noted among the Cossacks, particularly in 1649. Examples include Radko Karpenko, Radko Skidan, and Radko Radko. In non-military contexts of Zaporizhian Cossack society, this name was used less frequently, as evidenced by the record from 1683: Radko Pavlenko.
