Thompson Spur () is a large, rugged mountain spur that descends eastward from Daniels Range between the Swanson Glacier and Edwards Glacier, in the Usarp Mountains. Mapped by United States Geological Survey (USGS) from surveys and U.S. Navy air photos, 1960–63. Named by Advisory Committee on Antarctic Names (US-ACAN) for David H. Thompson, United States Antarctic Research Program (USARP) biologist at Hallett Station, 1965–66 and 1967–68. See also Fruitcake Bluff Ridges of Victoria Land Pennell Coast Mountain spurs