Kozia Góra Krajeńska [ˈkɔʑa ˈɡura kraˈjɛɲska] is a village in the administrative district of Gmina Mrocza, within Nakło County, Kuyavian-Pomeranian Voivodeship, in north-central Poland. It lies approximately 5 kilometres (3 mi) south of Mrocza, 7 km (4 mi) north of Nakło nad Notecią, and 29 km (18 mi) west of Bydgoszcz.