| Dulgalakh Дулҕалаах | |
| Mouth: | Yana |
| Mouth Coordinates: | 67.4642°N 133.2475°W |
| Subdivision Type1: | Country |
| Subdivision Name1: | Yakutia, Russia |
| Length: | 507km (315miles) |
| Mouth Elevation: | 132m (433feet) |
| Discharge1 Avg: | 101m3/s |
| Basin Size: | 27300km2 |
The Dulgalakh (Russian: Дулгалах; Yakut: Дулҕалаах, Dulğalaax) is a river in Yakutia, the left, western source river of the Yana. Its length is 507km (315miles) and its basin size 27300km2.
The Dulgalakh rises on the central Verkhoyansk Range, south of the southern slopes of the Arkachan Plateau. It flows through Kobyaysky and Verkhoyansky districts. Above Verkhoyansk it merges with the Sartang forming the Yana.[1]