| Kleiner Feldberg | |
| Photo Size: | 250 |
| Elevation M: | 826 |
| Prominence M: | 670 |
| Map: | Germany Hesse |
| Label Position: | right |
| Location: | Hesse, Germany |
| Range: | Taunus |
| Coordinates: | 50.2217°N 8.4458°W |
The Kleiner Feldberg is the second-highest mountain in the Taunus mountain range, located in Hesse, Germany. It has an elevation of . The Großer Feldberg is located in its immediate neighbourhood.
In 1913, a meteorological and geophysical observatory was built there by German meteorologist Franz Linke. In 1988 an astronomical observatory was built on the mountain's top. The source of the Weil River and a small castle of the Limes Germanicus are located at its northern base.