Lann Glacier () is a steep tributary glacier, long, in the north end of the Admiralty Mountains of Antarctica. The glacier is east of Rowles Glacier and flows northwest to enter Dennistoun Glacier. It was mapped by the United States Geological Survey from surveys and U.S. Navy air photos, 1960–63, and was named by the Advisory Committee on Antarctic Names for Roy R. Lann, a U.S. Navy cook at Hallett Station, 1964. References Glaciers of Pennell Coast