Třemešná (German: Röwersdorf) is a municipality and village in Bruntál District in the Moravian-Silesian Region of the Czech Republic.

Třemešná consists of three municipal parts (in brackets population according to the 2021 census):[2] Třemešná is located about 25 kilometres (16 mi) north of Bruntál and 63 km (39 mi) northwest of Ostrava.

It was one of the settlements that were founded in the area around 1251 at the initiative of the bishop Bruno von Schauenburg.

It is also the starting point of the narrow-gauge Třemešná ve Slezsku–Osoblaha railway.

The main landmark of the municipality is the Church of Saint Sebastian.