Nickerson Ice Shelf (75°45′S145°00′W), is an ice shelf about 35 miles wide, lying north of Siemiatkowski Glacier and the western part of Ruppert Coast, Marie Byrd Land, Antarctica. First observed and roughly mapped by the Byrd Antarctic Expedition (ByrdAE) (1928-30). Named by Advisory Committee on Antarctic Names (US-ACAN) for Commander H.J. Nickerson, U.S.