South Guelderish (Dutch: Zuid-Gelders, German: Südgeldersch) refers to the easternmost group of Dutch dialects spoken along the lower Rhine (Dutch Nederrijn and German Niederrhein). In its narrower sense, the term refers strictly to the Rivierenlands, Nijmeegs, and Liemers sub-dialects; in its broader sense, the term encompasses also North Limburgish in the Netherlands and Kleverlander (around Cleves; Dutch Kleverlands, German Kleverländisch) and East Bergish in Germany. South Guelderish (in the narrow sense) — especially Rivierenlands — is sometimes included as part of Brabantic, a more widely spoken Dutch dialect and the closest relative of South Guelderish. Alternatively, it is considered to extend southward into Northern Limburg until the Uerdingen line. It is arguably more appropriate to group South Guelderish (narrow sense), North Limburgish, Kleverlander, and East Bergish into one dialect group—East Dutch.
In the Netherlands, South Guelderish is spoken in the following regions: the Veluwezoom National Park, Rijk van Nijmegen, Land van Maas en Waal, the Bommelerwaard, the Tielerwaard, the Betuwe and Liemers.