Legionowo[lɛɡʲɔˈnɔvɔ] is a town in Masovia (Polish:Mazowsze). According to the 2004 Census estimate the town has a total population of 50,759.
Legionowo is located 23 kilometres (14 miles) to the north-east of the center of Warsaw and only 7 kilometres (4 miles) to the south of Zegrze Reservoir (Jezioro Zegrzyńskie or Zalew Zegrzyński), near the Warsaw-Gdańsk railroad and Warsaw-Suwałki road.