Germania Slavica, a historiographic term used since the 1950s, denotes the medieval contact zone between Germans and Slavs in Central Europe.
Historian Klaus Zernack divides Germania Slavica into:
From the late first millennium CE, Slavic tribes (collectively referred to as Wends) settled in Germania Slavica. The area underwent great social transformations associated with the influx of settlers from the West (primarily Germans) during the Ostsiedlung in the High Middle Ages.
By analogy, the term Bavaria Slavica denotes the medieval German-Slavic contact zone in northeastern Bavaria.