Silesian Tribes

Silesian tribes (pl: plemiona śląskie) – were the European tribes of West Slavs that lived in the territories of Silesia. The territory they lived on became part of the Great Moravia in 875 (now mostly Czech Republic) and later, in 990, first Polish state created by duke Mieszko I and then expanded by king Boleslaw I at the beginning of the 11th century. They are usually treated as part of Polish tribes. Two tribes among them are sometimes considered as Czech (Moravian) tribes.

The Silesian tribes, together with the Polans, Masovians, Vistulans and Pomeranians were the most important Polish tribes. These five tribes "shared fundamentally common culture and language and were considerably more closely related to one another than were the Germanic tribes."