|Western and Central Germany, southeastern Netherlands, eastern Belgium, Luxembourg and northeastern France|
Central German (German: mitteldeutsche Dialekte, mitteldeutsche Mundarten, Mitteldeutsch) is a group of High German dialects spoken from the Rhineland in the west to the former eastern territories of Germany.
Central German is distinguished by having experienced the High German consonant shift to a lesser degree than Upper German. It is spoken in the linguistic transition region separated from Northern Germany (Low German/Low Franconian) by the Benrath line isogloss. It is separated from Southern Germany (Upper German) by the Speyer line.
The area corresponds to the geological region of the hilly Central Uplands that stretches from the North German plain to the South German Scarplands, covering the states of Saarland, Rhineland-Palatinate, Hesse, Thuringia and Saxony.