The Begidyan (Russian: Бегидян, also Бегиджян; Yakut: Бэгидьээн) is a river in Sakha Republic (Yakutia), Russia.

After leaving the mountains it heads southwestwards into the Central Yakutian Lowland, forming meanders in the flat permafrost floodplain.

[3] The longest tributary of the Begidyan is the 51 km (32 mi) long Yulegiir from the left.

[3][4] The river freezes in the first half of October and opens in late May to early June.

[5] The main fish species found in the waters of the river are grayling, lenok, nelma, whitefish, pike, ide and perch.