The North Polar Basin is an oceanic basin in the Arctic Ocean, consisting of two main parts, the Amerasian Basin (also Central Polar Basin) and the Eurasian Basin (also Norwegian Basin), which are separated by the Lomonosov Ridge, a mid-ocean ridge running between north Greenland and the New Siberian Islands. The basin is bordered by the continental shelves of Eurasia and North America.
There was an expedition to the North Polar Basin by Fridtjof Nansen and Otto Sverdrup in the "Fram" in 1893-1896. Roald Amundsen sailed across the North Polar Basin between 1922 and 1924.