Świesz (Polish pronunciation: [ɕfjɛʂ]) is a village in the administrative district of Gmina Bytoń, within Radziejów County, Kuyavian-Pomeranian Voivodeship, in north-central Poland. It lies approximately 4 kilometres (2 mi) south-west of Bytoń, 10 km (6 mi) south of Radziejów, and 54 km (34 mi) south of Toruń.