Děčany is a municipality and village in Litoměřice District in the Ústí nad Labem Region of the Czech Republic. It has about 400 inhabitants. Děčany lies approximately 19 kilometres (12 mi) south-west of Litoměřice, 27 km (17 mi) south of Ústí nad Labem, and 54 km (34 mi) north-west of Prague.