Mlewiec [ˈmlɛvjɛt͡s] is a village in the administrative district of Gmina Kowalewo Pomorskie, within Golub-Dobrzyń County, Kuyavian-Pomeranian Voivodeship, in north-central Poland. It lies approximately 7 kilometres (4 mi) west of Kowalewo Pomorskie, 19 km (12 mi) north-west of Golub-Dobrzyń, and 20 km (12 mi) north-east of Toruń.