Samsieczynek [samɕɛˈt͡ʂɨnɛk] is a village in the administrative district of Gmina Mrocza, within Nakło County, Kuyavian-Pomeranian Voivodeship, in north-central Poland. It lies approximately 7 kilometres (4 mi) south-east of Mrocza, 11 km (7 mi) north-east of Nakło nad Notecią, and 24 km (15 mi) north-west of Bydgoszcz.