Světlá nad Sázavou (Czech pronunciation: [ˈsvjɛtlaː ˈnat saːzavou]; German: Swietla ob der Sasau) is a town in Havlíčkův Brod District in the Vysočina Region of the Czech Republic.

Světlá nad Sázavou consists of 15 municipal parts (in brackets population according to the 2021 census):[2] Světlá nad Sázavou is located about 14 kilometres (9 mi) northwest of Havlíčkův Brod and 32 km (20 mi) northwest of Jihlava.

The highest point is the hill Žebrákovský kopec at 601 m (1,972 ft) above sea level.

Světlá experienced the greatest development during the rule of the Trčka of Lípa family, which acquired it after the Hussite Wars and owned it until 1607.

Crystal Bohemia, the largest Czech glass company, has owned a local production plant since 2020.