Mrągowo is a resort town situated in northeastern Poland within the Warmian-Masurian Voivodeship. It serves as the capital of Mrągowo County and is the seat of the Gmina Mrągowo. The town has a population of 20,399 inhabitants as of 2025.
Located in the ethnographic region of Masuria, the town is positioned within the Masurian Lake District. It is situated approximately 60 km (37 mi) east of the city of Olsztyn.