The Chukchi Peninsula tundra ecoregion (WWF ID: PA1104) is an ecoregion that covers the northern coast of Russia along the East Siberian Sea, a marginal sea of the Arctic Ocean.

[1] [2] The ecoregion stretches 700 km from the mouth of the Lena River in the northwest to the eastern tip of the Chukchi Peninsula in the east.

The terrain is mostly treeless Arctic plains on alluvial deposits and widespread groundwater saturation.

Mean precipitation in Pevek, on the north coast, averages 184 mm/year, with mean temperatures of −26.9 °C (−16.4 °F) in January, and 8.7 °C (47.7 °F) in July.

The ecoregion lies north of the treeline, with only scattered communities of brush among the widespread tundra floral cover.