Radomir Knoll (Radomirska Mogila \'ra-do-mir-ska mo-'gi-la\) rises to approximately 300 m in Prespa Glacier, eastern Livingston Island in the South Shetland Islands, Antarctica. It is formed by the south extremity of an offshoot of Friesland Ridge, Tangra Mountains extending to the south-southeasdr from St. Cyril Peak.
The feature is named after the Bulgarian town of Radomir.
The knoll is located at , which is 1.55 km west of Needle Peak, 2.46 km south-southeast of St. Cyril Peak, 2.66 km northeast of Yambol Peak and 2.15 km northeast of Gela Point (Bulgarian mapping in 2005 and 2009).
This article includes information from the Antarctic Place-names Commission of Bulgaria which is used with permission.