Sitno [ˈɕitnɔ] is a village in the administrative district of Gmina Sośno, within Sępólno County, Kuyavian-Pomeranian Voivodeship, in north-central Poland. It lies approximately 12 kilometres (7 mi) south-west of Sośno, 18 km (11 mi) south of Sępólno Krajeńskie, and 34 km (21 mi) north-west of Bydgoszcz.