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 overlooks Boyana Glacier to the west and Srebarna Glacier to the northeast.