The Yana Plateau (Russian: Янское плоскогорье, Yakut: Дьааҥы хаптал хайалара, romanized: Câñı xaptal xayalara) is a mountain plateau in the Sakha Republic, Far Eastern Federal District, Russia.

It was first surveyed and mapped in 1868 by Gerhard von Maydell (1835–1894), a Russian government officer in East Siberia of Estonian descent.

Individual mountain massifs with elevations up to 1,500 metres (4,900 ft) rise above the plateau; the highest point is the 1,770 metres (5,810 ft) highest summit of the Arga-Billyakh massif, located at 66°40′41″N 135°26′23″E / 66.67806°N 135.43972°E / 66.67806; 135.43972 between the Adycha and its tributary Borulakh.

[4] Generally rivers flow across the Yana Plateau from the south to the north, including the Yana River with its tributary Adycha and its tributaries Derbeke, Nelgese and Tuostakh, as well as the Sartang, Dulgalakh and Bytantay, among others.

The middle courses of the Derbeke and the Nelgese, tributaries of the Adycha flowing northwards across the Yana Plateau, have swamps and numerous lakes, including Emanda (Yakut: Эмандьа), the largest lake in the area.