Euroregion Cieszyn Silesia (Polish: Euroregion Śląsk Cieszyński, Czech: Euroregion Těšínské Slezsko) is one of the euroregions (transnational co-operation structures) between Poland and Czech Republic. It has area of 1741,34 km2 and 658,224 inhabitants as of 2009. The largest cities are Jastrzębie-Zdrój from Polish side and Havířov from Czech side. It was established on 22 April 1998.[1]
It comprises a large part of the historical region of Cieszyn Silesia:
Not the whole area of the historical Cieszyn Silesia region belongs to the euroregion, mainly Bielsko and Czechowice-Dziedzice and Frýdek with its surroundings, east of the Ostravice river, which belong to the Euroregion Beskydy.[3]