Mount McArthur is, at about 1,450 metres (4,760 ft), the highest peak in the Walton Mountains of southern Alexander Island, Antarctica.

It was named by the UK Antarctic Place-Names Committee after Malcolm McArthur, a British Antarctic Survey geophysicist at Stonington Island, 1971–73, who worked in northern Alexander Island.

[1] This article incorporates public domain material from "Mount McArthur".

Geographic Names Information System.

This Alexander Island location article is a stub.