The Dzhardzhan (Russian: Джарджан; Yakut: Дьардьаан, romanized: Carcân) is a river in the Sakha Republic (Yakutia), Russia.

[1] The river flows north of the Arctic Circle across the desolate territory of Zhigansky District.

Dzhardzhan village, the formerly only inhabited place in the area, is located on the banks of the Lena, close to its mouth.

It flows roughly westwards, cutting across the Dzhardzhan Range in its upper course and descending into a floodplain in its middle course.

Towards the end the Dzhardzhan bends sharply southwestwards and southwards, joining the right bank of the Lena 513 km (319 mi) from its mouth.