Hadley Upland (68°29′S66°24′W) is a triangular shaped remnant plateau with an undulating surface, 1,500 to 1,900 metres (4,900 to 6,200 ft), in southern Graham Land, Antarctica. It is bounded by Windy Valley and Martin Glacier, Gibbs Glacier and Lammers Glacier. The existence of this upland was known to the United States Antarctic Service, 1939–41, Finn Ronne and Carl R.