Tagajõgi
| Tagajõgi | |
|---|---|
| Location | |
| Country | Estonia | 
| Physical characteristics | |
| Mouth | Rannapungerja River | 
 • coordinates  | 59°01′18″N 27°06′14″E / 59.02154°N 27.10402°E | 
| Length | 48.7 km (30.3 mi) | 
| Basin size | 256.6 km2 (99.1 sq mi) | 
The Tagajõgi is a river in Ida-Viru and Lääne-Viru counties, Estonia. The river is 48.7 km long, and its basin size is 256.6 km2. It runs from Lake Tudu into the Rannapungerja River.
Trout live in the river.