Conrad II, Duke of Bohemia

Conrad II Otto
Duke of Bohemia
Seal of Conrad II Otto, Duke of Bohemia
Reign	1189–1191
Spouse(s)	Hellicha of Wittelsbach
Noble family	Přemyslid dynasty
Father	Conrad II of Znojmo
Mother	Maria of Serbia
Born	c. 1135
Died	9 September 1191 near Naples, Kingdom of Sicily

Conrad II Otto (Czech: Konrád II. Ota; c. 1136 – 9 September 1191), a member of Přemyslid dynasty, was the first Margrave of Moravia from 1182 to 1189 and Duke of Bohemia from 1189 until his death.

Conrad was the son of count Conrad II of Znojmo and the Serbian princess Marija, a daughter of Grand Prince Uroš I of Serbia of the Vukanović dynasty. Conrad was the grandson of Luitpold, the first ruler of the Přemyslid appanage of Znojmo in southern Moravia. Conrad's sister Helen of Znojmo became a Polish consort by her marriage to High Duke Casimir II the Just.

After the death of his father in 1161, he assumed the rule over the Znojmo principality. In 1173 he occupied the lands of Brno, which controlled more than the half of the Moravian territory (except for Olomouc) at that time. When in summer 1176 he also invaded the region north of the Danube that belonged to Duke Soběslav II of Bohemia, he became entangled in the duke's conflict with his nephew Frederick (Bedřich). Conrad attacked churches and monasteries and was excommunicated by Pope Alexander III.

After Frederick had again obtained the support of Emperor Frederick Barbarossa, Conrad and Duke Leopold V of Austria joined him on his campaign into Moravia and the occupation of Prague in 1178. Frederick was re-installed as Bohemian duke and Conrad expected to be rewarded with Olomouc, however, his hopes were disappointed.