Mount Macklin is a mountain having 2 peaks, the higher at , between Mount Carse and Douglas Crag in the southern part of the Salvesen Range of South Georgia. It was surveyed by the South Georgia Survey in the period 1951-57, and was named by the UK Antarctic Place-Names Committee for Alexander H. Macklin, the medical officer of the Imperial Trans-Antarctic Expedition under Ernest Shackleton, 1914-16. Macklin accompanied Shackleton in the voyage of the James Caird from Elephant Island to King Haakon Bay, South Georgia.