Christoff Cliff (Hristov Kamak \'hris-tov 'ka-m&k\) is a rocky cliff forming Aytos Point on the coast of Bransfield Strait, eastern Livingston Island in the South Shetland Islands, Antarctica.
The cliff rises to over 300 m at the southern extremity of an offshoot of Serdica Peak and has ice-free eastern and southern slopes.
The cliff is named after the famous Bulgarian singer Boris Christoff (1914-93).
The cliff is located at 62°42′00″S 60°03′30″W / 62.70000°S 60.05833°W / -62.70000; -60.05833 which is 2 km southeast of Serdica Peak, 2.7 km southwest by south of Radichkov Peak and 2.4 km southeast by east of Silistra Knoll.
This article includes information from the Antarctic Place-names Commission of Bulgaria which is used with permission.