The Upper Palatine-Bavarian Forest (German: Oberpfälzisch-Bayerische Wald), (no. D63 or 40) is a natural region in Germany in the northeast of Bavaria. It mainly comprises the low mountain ranges of the Bavarian Forest and Upper Palatine Forest which are up to 1456 m high and border on the Bohemian Massif immediately inside the Czech Republic's southwestern border with Germany.