Radzyń Chełmiński (Polish pronunciation: [ˈrad͡zɨɲ xɛu̯ˈmʲiɲskʲi]; German: Rehden) is a town in Grudziądz County, Kuyavian-Pomeranian Voivodeship, Poland,[1] with 1,946 inhabitants (2004).

Radzyń is located within the historic Chełmno Land, which became part of the emerging Polish state in the 10th century.

Radzyń was a royal town of the Kingdom of Poland, administratively located in the Chełmno Voivodeship.

Other Gothic sights include the parish church of St. Anne, which construction started about 1310 and finished about 1340, and the chapel of St. George.

A memorial dedicated to local Poles-victims of World War II and Nazi Germany-is located at the market square.