| Eller | |
| Source1 Location: | At the confluence of the Weilroder Eller and the Geroder Eller |
| Source1 Coordinates: | 51.5549°N 10.3726°W |
| Mouth Location: | Rhume |
| Mouth Coordinates: | 51.5811°N 10.2745°W |
| Subdivision Type1: | Country |
| Subdivision Name1: | Germany |
| Subdivision Type2: | States |
| Subdivision Name2: | Lower Saxony and Thuringia |
Eller is a river of Lower Saxony and Thuringia, Germany.
Its source is the confluence of the Weilroder Eller and the Geroder Eller. It flows into the Rhume in Rüdershausen.