Český Krumlov is a small city in the South Bohemian Region of the Czech Republic, best known for the fine architecture and art of the historic old town and Krumlov Castle.

The city is named Český Krumlov  to differentiate it from Moravský Krumlov in the southeast of the country.

Krumlov Castle is unusually large for a town of Krumlov's size; within the Czech Republic it is second only to the Hradčany castle complex of Prague.

Krumlov Castle contains a preserved Baroque theatre (completed 1766), complete with original stage machinery, scenery and props: one of only a few such theatres that still exist (others at Drottningholm and Gripsholm in Sweden). Due to its age, the theatre is only used three times a year (only two are open to the public), when a Baroque opera is performed in simulated candlelight.

Krumlov has a museum dedicated to the painter Egon Schiele, who lived in the town.

Ten kilometers from Krumlov is one of Bohemia's oldest monasteries, Zlatá Koruna ("The Golden Crown"). About 30 km from Krumlov is the Hluboká Castle, established in the 12th century and later remodelled according to Windsor Castle in England.

Krumlov is close to the Šumava National Park, the Czech Republic's largest national park. The Šumava mountains lie along the border with Austria and Germany and offer a range of natural habitats - peat bogs, Alpine meadows, primeval forests, lakes, and rivers. The area is popular with walkers, cyclists, and canoeists on the Vltava.