Katarzyna [kataˈʐɨna] is a village in the administrative district of Gmina Piotrków Kujawski, within Radziejów County, Kuyavian-Pomeranian Voivodeship, in north-central Poland. It lies approximately 10 kilometres (6 mi) south-west of Piotrków Kujawski, 18 km (11 mi) south of Radziejów, and 63 km (39 mi) south of Toruń.