Rezen Knoll (Bulgarian: Vrah Rezen \'vr&h 're-zen\) is a knoll rising to 433 m in eastern Livingston Island in the South Shetland Islands, Antarctica. The knoll is bounded to the east, north and west by Perunika Glacier, and linked to Burdick Ridge by Rezen Saddle. The feature is 250 m wide, extending 500 m in east-west direction. Composed of lavas, with precipitous slopes except to the east.