| Nercha | |
| Map: | Shilka.png |
| Source1: | Olyokma-Stanovik |
| Mouth: | Shilka |
| Mouth Coordinates: | 51.9169°N 116.6411°W |
| Subdivision Type1: | Country |
| Subdivision Name1: | Russia |
| Length: | 580km (360miles) |
| Basin Size: | 27500km2 |
The Nercha (Russian: Нерча, Buriat: Нэршүү, Nershüü; Mongolian: Нэрчүү, Nerchüü) is a river in Zabaykalsky Krai in Russia, left tributary of the Shilka[1] (Amur's basin). The length of the river is 580km (360miles). The area of its basin is 27500km2. The Nercha freezes up in October and stays icebound until late April – early May. The town of Nerchinsk is located on the Nercha, 7km (04miles) from its confluence with the Shilka.