St. Theodosius Nunatak (Bulgarian: нунатак Св. Теодосий, ‘Nunatak Sv. Teodosiy’ \'nu-na-tak sve-'ti te-o-'do-siy\) is the mostly ice-free ridge extending 1.9 km in northeast-southwest direction and 1 km wide, rising to 430 m[1] on the west side of Havre Mountains in northern Alexander Island, Antarctica. It surmounts Lennon Glacier to the north and Pipkov Glacier to the south-southeast.
The feature is named after the Bulgarian cleric and hermit St. Theodosius of Tarnovo (1300-1363), in connection with the settlement of Teodosievo in Northern Bulgaria.
British Antarctic Territory. Scale 1:250000 topographic map. Sheet SR19-20/5. APC UK, 1991
Antarctic Digital Database (ADD). Scale 1:250000 topographic map of Antarctica. Scientific Committee on Antarctic Research (SCAR). Since 1993, regularly upgraded and updated