Bořivoj II was the duke of Bohemia from 25 December 1100 until May 1107 and from December 1117 until 16 August 1120. He was the younger half-brother and successor of Bretislaus II. His father was Vrat

Otto II the Black, a member of the Přemyslid dynasty, ruled as a Moravian prince in Olomouc from 1107 and in Brno from 1123 until his death.