Duff Point is a point forming the west extremity of Greenwich Island, in the South Shetland Islands, Antarctica. The name Duffs Straits was applied to McFarlane Strait by James Weddell in 1820-23, after Captain Norwich Duff under whom Weddell served in HMS Espoir in 1814. The name Duff Point was given by the UK-APC in 1961 in order to preserve Weddell's name in the area; this point forms the northeast entrance to McFarlane Strait.
The point is located at which is 5.54 km east of Williams Point, Livingston Island, 15.63 km west of Spark Point and 8.54 km north of Inott Point (British mapping in 1821 and 1968, Bulgarian in 2005 and 2009).
This article incorporates public domain material from the United States Geological Survey document "Duff Point" (content from the Geographic Names Information System).