Sisson Rock (, ) is the rock off the north coast of Livingston Island in the South Shetland Islands, Antarctica long in west-east direction and wide, and split in three. Its surface area is . The vicinity was visited by early 19th-century sealers.
The feature is named after Jonathan Sisson (1690âÂÂ1747), a British instrument maker who invented the modern theodolite for surveying; in association with other names in the area deriving from the early development or use of geodetic instruments and methods.
Sisson Rock is located at , which is 2.26 km northeast of Essex Point, 800 m west of Window Island and 1.5 km north of Voyteh Point, according to mapping in 2009 and 2017.