Radko Knoll (Bulgarian: Радкова Могила, ‘Radkova Mogila’ \'rad-ko-va mo-'gi-la\) is a rocky hill rising to 102 m on the north coast of Smyadovo Cove in the northwest of Rugged Island in the South Shetland Islands, Antarctica. Situated 780 m south of Cape Sheffield.
The knoll is named for Ivan ‘Radko’ Mihaylov (1896–1990), leader of the Bulgarian liberation movement in Macedonia.
Radko Knoll is located at . Spanish mapping in 1992 and Bulgarian in 2009.
This article includes information from the Antarctic Place-names Commission of Bulgaria which is used with permission.