| Effelder | |
| Mouth Coordinates: | 50.3519°N 11.0294°W |
| Subdivision Type1: | Country |
| Length: | 17.3km (10.7miles) |
Effelder is a tributary river of the Itz in the districts of Sonneberg (Thuringia) and Coburg (Bavaria). It flows into the Froschgrundsee, which is drained by the Itz, near Schönstädt.