The Haidenaab is the right and western headstream of the River Naab in the Upper Palatinate in the south German state of Bavaria.

From there the Haidenaab heads in a southeasterly direction before reaching the district of Tirschenreuth by the Renaissance castle of Schlackenhof, where it is joined from the northwest by the Flernitzbach.

Running past Kaibitz Castle it enters the district of Neustadt an der Waldnaab after a short distance.

The Haidenaab continues past Pressath and Mantel to Luhe-Wildenau, where it is united at the village of Unterwildenau with the Waldnaab to become the Naab, which eventually flows into the Danube.

This runs through the villages of Kastl, Trabitz, Pressath, Schwarzenbach, Mantel, Weiherhammer, Etzenricht, Oberwildenau and Unterwildenau.