Grochowiska Księże [ɡrɔxɔˈviska ˈkɕɛ̃ʐɛ] is a village in the administrative district of Gmina Rogowo, within Żnin County, Kuyavian-Pomeranian Voivodeship, in north-central Poland. It lies approximately 5 kilometres (3 mi) north of Rogowo, 10 km (6 mi) south of Żnin, and 45 km (28 mi) south-west of Bydgoszcz.