Rhenish Franconian or Rhine Franconian is a dialect chain of West Central German. It comprises the varieties of German spoken across the western regions of the states of Saarland, Rhineland-Palatinate, northwest Baden-Württemberg, and Hesse in Germany. It is also spoken in northeast France, in the eastern part of the département of Moselle in the Lorraine region, and in the north-west part of Bas-Rhin in Alsace. To the north, it is bounded by the Sankt Goar line (or das–dat line) which separates it from Moselle Franconian; to the south, it is bounded by the Main line which is also referred to as the Speyer line which separates it from the Upper German dialects.

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