The Tykakh (Russian: Тыках; Yakut: Тыкаах, Tıkaax) is a river in the Sakha Republic (Yakutia), Russia.

It has its sources at the confluence of the Arga-Sala and Ilin-Sala —both having a length of 31 km (19 mi)— at the edge of the northwestern part of the Yana Plateau, near the southeastern end of the Kular Range of the Verkhoyansk system.

The river flows first northeastwards, bending in a wide arch roughly in mid-course and then heading southeastwards within the mountain area.

Towards the end it meanders heading in an eastern direction in its last stretch, where the river enters a swampy area with lakes.

The nearest inhabited place is Batagay, located upstream from its confluence with the Yana[2][3] The main tributaries of the Tykakh are the 114 km (71 mi) long Oyuun-Yurege (Ойуун-Юрэгэ) on the right, as well as the 54 km (34 mi) long Tyiylyky (Тыйылыкы) on the left.