The Duchy of Krumlov (Krumau in German) was a titular duchy in the southern part of the Kingdom of Bohemia, comprising the town of Český Krumlov and its surrounding territories, now in the Czech Republic.
In 1628, it was given to Hans Ulrich von Eggenberg by King Ferdinand II when he bestowed upon Hans Ulrich the title of Duke of Krumlov. The Bohemian possessions of the Eggenbergs later went to Hans Ulrich's son, Johann Anton von Eggenberg (1610–1649).
