Wołomin is a town located in the Masovian Voivodship of Poland. It serves as the seat of Wołomin County within the Warsaw metropolitan area.
Situated approximately 20 km (12 mi) east of the Polish capital, Warsaw, the town lies near the railway line leading to Białystok. Wołomin covers an area of 14 km² (5 sq mi) and has a population of approximately 43,000 inhabitants.