Vilémov (German: Willomitz) is a municipality and village in Chomutov District in the Ústí nad Labem Region of the Czech Republic. It has about 600 inhabitants. Vilémov lies approximately 20 kilometres (12 mi) south of Chomutov, 65 km (40 mi) south-west of Ústí nad Labem, and 82 km (51 mi) west of Prague.