Fusilier Mountain is a mountain rising to 810 metres (2,660 ft) on the north side of Heaney Glacier, 2.7 nautical miles (5 km) west of Mount Skittle, on the north coast of South Georgia. The field name "Dome Mountain" was used by the South Georgia Survey, 1951–52. It was named by the UK Antarctic Place-Names Committee in 1991 after the Royal Regiment of Fusiliers, established in 1688, the oldest unit in the British Army.