Mrowiniec [mrɔˈviɲɛt͡s] is a village in the administrative district of Gmina Tuchola, within Tuchola County, Kuyavian-Pomeranian Voivodeship, in north-central Poland. It lies approximately 12 kilometres (7 mi) north-west of Tuchola and 66 km (41 mi) north of Bydgoszcz.