| Khudan | |
| Source1: | Khudan Range Selenga Highlands |
| Source1 Elevation: | 1140m (3,740feet) |
| Source1 Coordinates: | 52.065°N 111.6956°W |
| Mouth: | Uda |
| Mouth Elevation: | 649m (2,129feet) |
| Mouth Coordinates: | 52.1236°N 109.6817°W |
| Progression: | Uda→ |
| Subdivision Type1: | Country |
| Subdivision Name1: | Russia |
| Subdivision Type2: | Federal subject |
| Subdivision Name2: | Buryatia |
| Length: | 66km (41miles) |
| Discharge1 Avg: | 12.7m3/s |
| Basin Size: | 787km2 |
| Pushpin Map: | Russia Buryatia |
| Pushpin Map Caption: | Mouth location in Buryatia, Russia |
The Khudan (Russian: Худан, also: Худун, Кудун, Кодун)[1] is a river in Buryatia, southern East Siberia, Russia. It is long, and has a drainage basin of .
Its average flow rate at the mouth is 12.7 m³/s.
The Khudan is a left tributary of the Uda, of the Selenga basin. The river has its sources in the Khudan Range by the junction with the Tsagan-Khurtei range, 5km (03miles) to the northwest of 1554m (5,098feet) high Mount Khudan, about 120km (80miles) west of Chita. The Khudan flows roughly in a WNW direction and meets the Uda 200km (100miles) from its mouth in the Selenga.[2] The river is generally frozen from mid-October or early November until April or May.
