| Mechi River | |
|---|---|
 | |
  Mechi River near West Bengal–Bihar border  Mechi River (India) | |
| Location | |
| Country | Nepal, India |
| Physical characteristics | |
| Source | Mahabharat Lekh |
| • location | Mahabharat Lekh, Nepal |
| Mouth | Mahananda River |
• location | Kishanganj district, Bihar, India |
• coordinates | 26°13′46″N 87°57′05″E / 26.22944°N 87.95139°E |
The Mechi River is a trans-boundary river flowing through Nepal and India. It is a tributary of the Mahananda River.