Chełmoniec is a village in the administrative district of Gmina Kowalewo Pomorskie, within Golub-Dobrzyń County, Kuyavian-Pomeranian Voivodeship, in north-central Poland. It lies 5 kilometres (3 mi) south-east of Kowalewo Pomorskie, 8 km (5 mi) north-west of Golub-Dobrzyń, and 25 km (16 mi) north-east of Toruń.