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. It is situated 830 m south-southeast of Cape Sheffield and 860 m north-northeast of Ugain Point.
The knoll is named for Ivan ‘Radko’ Mihaylov (1896–1990), leader of the Bulgarian liberation movement in Macedonia.