Mariánské Radčice (German: Maria Ratschitz) is a municipality and village in Most District in the Ústí nad Labem Region of the Czech Republic. It has about 500 inhabitants. Mariánské Radčice lies approximately 9 kilometres (6 mi) north of Most, 29 km (18 mi) west of Ústí nad Labem, and 77 km (48 mi) north-west of Prague.