| Hartlaber | |
| Subdivision Type1: | Country |
| Subdivision Type2: | State |
| Subdivision Name2: | Bavaria |
| Mouth Location: | Schönach (Mötzing) |
| Mouth Coordinates: | 48.9088°N 12.4117°W |
| Length: | 8.38km (05.21miles) |
| Basin Size: | 51.27km2 |
The Hartlaber is a stream in Bavaria, Germany. It is a distributary of the Große Laber in Lower Bavaria.
The Hartlaber branches off the Große Laber west from Sünching-Haidenkofen to the right. After 8.38 km it flows back into the Große Laber between Mötzing-Oberhaimbuch and -Schönach.