Downes Glacier (53°2′S 73°31′E / 53.033°S 73.517°E / -53.033; 73.517) is a broad tidewater glacier on the north side of Heard Island in the southern Indian Ocean.

To the west of Downes Glacier is Challenger Glacier, whose terminus is located at the eastern side of Corinthian Bay, close west to Saddle Point.

Surveyed by ANARE (Australian National Antarctic Research Expeditions) in 1948.

Downes, ANARE biologist at Heard Island in 1951 and 1963.

[6][7] This article incorporates public domain material from "Downes Glacier".