| Kochhart | |
| Mouth: | Ammer |
| Mouth Coordinates: | 48.5405°N 8.9222°W |
| Progression: | Ammer→ |
| Subdivision Type1: | Country |
| Subdivision Name1: | Germany |
| Subdivision Type2: | State |
| Subdivision Name2: | Baden-Württemberg |
Kochhart is a river near Tübingen, Baden-Württemberg, Germany. The small river eroded a valley, which is a Naturschutzgebiet for geological and biological reasons. It flows into the Ammer near Ammerbuch.