Murucin [muˈrut͡ɕin] is a village in the administrative district of Gmina Sicienko, within Bydgoszcz County, Kuyavian-Pomeranian Voivodeship, in north-central Poland. It lies approximately 11 kilometres (7 mi) north-west of Sicienko and 27 km (17 mi) north-west of Bydgoszcz.