The Northeast Siberian coastal tundra ecoregion (WWF ID: PA1107) is an ecoregion that covers the coastal plain of the central north region of Siberia in Russia.

There are several large river deltas in the area that support breeding grounds for 60 to 80 species of migratory birds.

Thermokarst lakes are common, caused by the freezing and thawing of permafrost.

[3] Plants of the ecoregion are those typical of the tundra landscape, with some isolated strands of larch taiga in the southern sectors.

Common plant families include cotton grasses (Eriophorum), sedges (Carex), Dryas, willows (Salix), and various species of Vaccinium.