The Bavarian Forest (German: Bayerischer Wald) is a wooded low-mountain region in Bavaria, Germany. It extends along the Czech border and is continued on the Czech side by the Šumava (Bohemian Forest). Geographically the Bavarian Forest and Bohemian Forest are sections of the same mountain range. A part of the Bavarian Forest belongs to the Nationalpark Bayerischer Wald (240 km²), established in 1970 as the first national park in Germany. The Bayerischer Wald is a remnant of the Hercynian Forest that stretched across southern Germania in Roman times.
The highest mountain in the region is the Großer Arber ("Great Arber", 1456 m). The main river is the Regen, which is formed by the conjunction of White Regen and Black Regen and leaves the mountains towards the city of Regensburg.