Mątasek [mɔnˈtasɛk] is a village in the administrative district of Gmina Warlubie, within Świecie County, Kuyavian-Pomeranian Voivodeship, in north-central Poland. It lies approximately 10 kilometres (6 mi) north-west of Warlubie, 28 km (17 mi) north of Świecie, 70 km (43 mi) north of Toruń, and 70 km (43 mi) north-east of Bydgoszcz. Mątasek is located in the ethnocultural region of Kociewie.