St. Sofroniy Knoll (Bulgarian: Св. Софрониева могила, ‘Sv. Sofronieva Mogila’ \ sve-'ti so-'fro-ni-e-va mo-'gi-la\) is the hill rising to 107 m on the small ice-free peninsula of President Head in the northeast extremity of Snow Island in the South Shetland Islands, Antarctica. It is situated 1.3 km southwest of the extreme northeast point of the peninsula, and overlooks Calliope Beach on the west-northwest and Oeagrus Beach on the west.
The knoll is named after St. Sofroniy Vrachanski (Sophronius of Vratsa, born Stoyko Vladislavov; 1739–1813), a leading figure in the Bulgarian National Revival.
St. Sofroniy Knoll is located at -62.7303°N -61.22°W. British mapping in 1968, Bulgarian in 2009.
