| Phalgu River | |
|---|---|
 Phalgu River at Gaya | |
 | |
| Location | |
| Country | India |
| State | Bihar, Jharkhand |
| District | Gaya |
| Physical characteristics | |
| Source | Confluence of Lilajan and Mohana rivers |
| • location | near Gaya |
| • coordinates | 24°43′41″N 85°00′47″E / 24.72806°N 85.01306°E |
| Mouth | Punpun River |
The Phalgu or Falgu, a river that flows past Gaya, India in the Indian state of Bihar, is a sacred river for Hindus and Buddhists. Lord Vishnu's Temple Vishnupad Mandir is situated on the bank of Phalgu river also called Niranjana river.