Mercury Bluff is a perpendicular bluff on Gerlovo Beach in the northwest of Ioannes Paulus II Peninsula, Livingston Island in the South Shetland Islands, Antarctica. The area was visited by early 19th century sealers.
The feature is named after the British sealing ship Mercury under Captain Robert Wetherell that operated out of the nearby Shirreff Cove in 1820–21.