| Haidenaab | |
| Subdivision Type1: | Country |
| Subdivision Name1: | Germany |
| Subdivision Type2: | State |
| Subdivision Name2: | Bavaria |
| Subdivision Type3: | Reference no. |
| Subdivision Name3: | DE: 142 |
| Length: | 69.1km (42.9miles) |
| Source1 Location: | northeast of Kirchenpingarten |
| Source1 Elevation: | ca. 680 m |
| Mouth Location: | confluence with the Waldnaab to become the Naab near Unterwildenau (mun. Luhe-Wildenau) |
| Mouth Elevation: | ca. 380 m |
| Basin Size: | 724km2 |
| Custom Label: | References |
The Haidenaab is the right and western headstream of the River Naab in the Upper Palatinate in the south German state of Bavaria. At its confluence with the Waldnaab near Luhe-Wildenau, the Naab is formed.
The river rises in the district of Bayreuth on the southern edge of the Fichtel Mountains between Kirchenpingarten and the mountain of Platte, about seven kilometres north of Speichersdorf.
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. Near Dorfgmünd it is joined by its largest tributary, the River Creußen. 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. For much of its course the Haidenaab is accompanied by the Haidenaab Cycleway. This runs through the villages of Kastl, Trabitz, Pressath, Schwarzenbach, Mantel, Weiherhammer, Etzenricht, Oberwildenau and Unterwildenau. As the Naab Cycleway the path continues to the city of Regensburg.