Przasnysz is a town located in north-central Poland within the Masovian Voivodship. It serves as the capital of Przasnysz County and is situated approximately 110 km (68 mi) north of Warsaw and 115 km (71 mi) south of Olsztyn.
The town was granted official town privileges in 1427 and was historically recognized as one of the most significant towns in Mazovia during the Middle Ages. As of 2004, the population of Przasnysz was recorded at 18,093 inhabitants.