The Lungkha (Russian: Лунгха; Yakut: Луҥха, Luŋxa) is a river in Yakutia (Sakha Republic), Russia. It is the 14th longest tributary of the Lena with a length of 508 kilometres —533 kilometres counting its Yychaky tributary. Its drainage basin area is 10,300 square kilometres.
A331 highway passes close to the river near its origin. The villages of Oyun-Unguokhtakh, Argas and Taas-Tumus are located by the river. The last 72 kilometres stretch of the Lungkha is navigable.
The main fish species in the river are pike, ide and perch.
