Kájov (German: Gojau) is a municipality and village in Český Krumlov District in the South Bohemian Region of the Czech Republic.

The northern part of the municipal territory lies within the Blanský les Protected Landscape Area.

The first written mention of Kájov, Kladné and Křenov is from 1263, when King Ottokar II donated them to the newly established monastery in Zlatá Koruna.

[4] The main landmark of Kájov and one of the most important historical monuments in the region is the Church of the Assumption of the Virgin Mary.

Later it was rebuil in the Gothic and Renaissance styles, but Romanesque tower and perimeter walls of the nave were preserved to this day.