| Berchtesgadener Ache | |
| Source1 Location: | confluence of the Ramsauer Ache and the Königsseer Ache in Berchtesgaden |
| Source1 Coordinates: | 47.6257°N 13.0002°W |
| Mouth Coordinates: | 47.7314°N 13.0819°W |
| Subdivision Type1: | Countries |
| Subdivision Name1: | Germany and Austria |
| Subdivision Type2: | States |
| Subdivision Name2: | Bavaria and Salzburg |
| Length: | 17.8km (11.1miles) |
| Basin Size: | 419km2 |
The Berchtesgadener Ache is a river of Bavaria, Germany and of Salzburg, Austria. It is formed at the confluence of the Ramsauer Ache and the Königsseer Ache in Berchtesgaden. It flows into the Salzach near Anif.