Jasień [ˈjaɕɛɲ] is a village in the administrative district of Gmina Tłuchowo, within Lipno County, Kuyavian-Pomeranian Voivodeship, in north-central Poland. It lies approximately 5 kilometres (3 mi) west of Tłuchowo, 20 km (12 mi) south-east of Lipno, and 62 km (39 mi) south-east of Toruń.