Kluczbork [ˈklud͡ʐbɔrk] (German: Kreuzburg) is a town in southwestern Poland with 24,962 inhabitants (2011), situated in the Opole Voivodeship. It is the capital of Kluczbork County and an important railroad junction. In Kluczbork the major rail line from Katowice splits into two directions - westwards to Wrocław and northwards to Poznań.