Sęczkowo [sɛnt͡ʂˈkɔvɔ] is a village in the administrative district of Gmina Osięciny, within Radziejów County, Kuyavian-Pomeranian Voivodeship, in north-central Poland. It lies approximately 6 kilometres (4 mi) north of Osięciny, 16 km (10 mi) east of Radziejów, and 40 km (25 mi) south of Toruń.