Łążek [ˈwɔ̃ʐɛk] is a village in the administrative district of Gmina Kuczbork-Osada, within Żuromin County, Masovian Voivodeship, in east-central Poland. It lies approximately 9 kilometres (6 mi) north-east of Kuczbork-Osada, 17 km (11 mi) north-east of Żuromin, and 121 km (75 mi) north-west of Warsaw.