| Ruvyironza River | |
|---|---|
  | |
| Native name | Rivière Ruvyironza (French) |
| Location | |
| Country | Burundi |
| Country | Tanzania |
| Physical characteristics | |
| Source | Mount Kikizi |
| • location | Burundi |
| • coordinates | 3°54′47″S 29°50′23″E / 3.91297°S 29.83960°E |
| Mouth | Ruvuvu River |
• location | Kagera Region |
• coordinates | 3°20′38″S 29°59′33″E / 3.34391°S 29.99238°E |
| Length | 182.4 km (113.3 mi) |
The Ruvyironza (or Luvironza) River (French: rivière Ruvyironza) is a river in Burundi, the main tributary of the Ruvubu River. Its headwaters are the most remote source of the Nile when measured by river length from the Nile's mouth.