Kolyma or Kolyma Krai is a historical region in the Russian Far East that includes the basin of Kolyma River and the northern shores of the Sea of Okhotsk, as well as the Kolyma Mountains. It is bounded to the north by the East Siberian Sea and the Arctic Ocean, and by the Sea of Okhotsk to the south. Kolyma Krai was never formally defined and over time it was split among various administrative units. As of 2023, it consists roughly of the Magadan Oblast, north-eastern areas of Yakutia, and the Bilibinsky District of Chukotka Autonomous Okrug.

The Kolyma is a river in northeastern Siberia, whose basin covers parts of the Sakha Republic, Chukotka Autonomous Okrug, and Magadan Oblast of Russia.