Mount Weller is a peak (2,420 m) rising above the west side of Beacon Valley, 4 nautical miles (7 km) southwest of Pyramid Mountain, in Quartermain Mountains, Victoria Land, Antarctica.

Presumably named after William J. Weller, Royal Navy, a seaman of the ship RSS Discovery.

accompanied Hartley T. Ferrar in the first geological reconnaissance of Quartermain Mountains.

The mountain consists of the lower Permian Metschel Tillite (evidence of the Late Paleozoic icehouse) overlaid by fossil-rich Devonian Aztec Siltstone like much of the Beacon Supergroup.

[4] This article incorporates public domain material from "Mount Weller (Victoria Land)".