Kornelin [kɔrˈnɛlin] is a village in the administrative district of Gmina Szubin, within Nakło County, Kuyavian-Pomeranian Voivodeship, in north-central Poland. It lies approximately 7 kilometres (4 mi) east of Szubin, 21 km (13 mi) south-east of Nakło nad Notecią, and 14 km (9 mi) south-west of Bydgoszcz.