Louny  is a town in the Ústí nad Labem Region of the Czech Republic. It is situated on the River Ohře.

The royal town of Louny was founded by Přemyslovci in the middle of 13th century on two major traffic arteries – a water artery represented by Ohře river and a terrestrial road from Prague to Norimberk or Leipzig. However, around the 11th – 12th century, there was a settlement called Luna, where today’s St. Peter’s Church, which was build in the middle of 15th century, is located. Significant landmarks from the end of the same century, such as fortifications with bastions, the Žatec Gate, the Chapel of Mother of God and the Sokolů z Mor (Sokol of Mory) house, are preserved.

Louny and its surroundings have always been rather agricultural region and its well known for producing high-quality hops. The industry has always been rather processing, eg. Pivovar Louny.