The Tympylykan (Russian: Тымпылыкан, Yakut: Тымпылыкаан, Tımpılıkaan) is a river in the Sakha Republic (Yakutia), Russia.

[1] The basin of the Tympylykan falls fully within the Central Yakutian Lowland.

[2] The Tympylykan originates in an area of swamps and small lakes of the Central Yakutian Lowland.

It flows first in a SSE direction and then roughly southeastwards to the south of the Linde within a wide floodplain.

Finally it meets the left bank of the Lena 1,086 kilometres (675 mi) upstream of its mouth in the Laptev Sea.