Mount Obiglio (74°27′S 131°50′W) is a moderate rock summit (510 m) in the west-central portion of Grant Island, along the edge of the Getz Ice Shelf, coastal Marie Byrd Land.[1] It consists of a volcanic cone that was formed by Strombolian and phreatomagmatic eruptions 0.51 million years ago.[2]

Discovered and charted from the USS 1961–62. Named by Advisory Committee on Antarctic Names (US-ACAN) for Lieutenant G.M. Obiglio, Argentine naval observer aboard Glacier, at the suggestion of the Task Unit Commander, Captain Edwin A. McDonald, USN.[1]

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