极地低压（polar low）是在两极地区发生的低气压系统。低气压内气温极低。一般都是寒冷的极地气团通过海面时发生。

相较于温带低气压，极地低压的规模更小，并会带来大雪。极地低压发生在南极洲全域、南冰洋、北冰洋及其周边、北大西洋北部、白令海、鄂霍次克海、日本海北部等海域。多发生在冬季及春季。

A polar low is a small-scale, short-lived atmospheric low pressure system (depression) that is found over the ocean areas poleward of the main polar front in both the Northern and Southern Hemispheres. The systems usually have a horizontal length scale of less than 1,000 kilometres (620 mi) and exist for no more than a couple of days. They are part of the larger class of mesoscale weather systems. Polar lows can be difficult to detect using conventional weather reports and are a hazard to high-latitude operations, such as shipping and gas and oil platforms. Polar lows have been referred to by many other terms, such as polar mesoscale vortex, Arctic hurricane, Arctic low, and cold air depression. Today the term is usually reserved for the more vigorous systems that have near-surface winds of at least 17 m/s (38 mph).