Mount Cloos is a dome-shaped mountain probably over 915m (3,002feet) high, standing at the north side of Girard Bay and 2.3miles northeast of Cape Cloos, on the northwest coast of Kyiv Peninsula in Graham Land. It was discovered by the Belgian Antarctic Expedition of 1897–99 under Gerlache. It was named in association with Cape Cloos by the French Antarctic Expedition of 1908–10 under Jean-Baptiste Charcot.