Domeyko Glacier is a glacier flowing southeast into Mackellar Inlet, Admiralty Bay, King George Island, in the South Shetland Islands. It was named by the Polish Antarctic Expedition, 1980, after Ignacy Domeyko, a Polish-born explorer of the Andes and sometime Professor of Chemistry and Mineralogy, and Rector, of the University of Chile, Santiago. The Cordillera Domeyko, mountain range of the Andes, is also named for the explorer.