加科尔山脊，又称南森海岭、北冰洋中脊，是一条位于北冰洋洋底的海底山脉。由东经120度、北纬80度起延伸至本初子午线、北纬80度止 （即界乎于西伯利亚和格陵兰之间）。隔欧亚海盆与罗蒙诺索夫海岭大致平行。

1966年由苏联探险家雅可夫·雅可夫利维奇·加科尔发现并以其名命名。

The Gakkel Ridge (formerly known as the Nansen Cordillera and Arctic Mid-Ocean Ridge) is a mid-oceanic ridge, a divergent tectonic plate boundary between the North American Plate and the Eurasian Plate. It is located in the Arctic Ocean between Greenland and Siberia, and has a length of about 1,800 kilometers. Geologically, it connects the northern end of the Mid-Atlantic Ridge with the Laptev Sea Rift.