Clifford J. MacGregor (23 February 1904 - October 1985) was a meteorologist, Arctic explorer and naval aviator.
He was then appointed to the Point Barrow, Alaska Meteorological Station as Commander of the U.S. Arctic weather expedition for the Second International Polar Year (1932–33).
While in Alaska MacGregor formulated a theory that Northern Hemispheric weather was bred in the Arctic.
MacGregor was assigned to the Newark Airport Weather office before taking a leave of absence to lead his own Arctic Expedition from July 1, 1937, through October 4, 1938 to Etah, Greenland.
It was MacGregor and his expedition that first proposed the need for a network of Arctic weather stations.