Ritchie Rock (, ) is the conspicuous rock off the southwest coast of Snow Island in the South Shetland Islands, Antarctica extending 80 m in southâÂÂnorth direction and 73 m in westâÂÂeast direction, with a surface area of 0.17 ha. The vicinity was visited by early 19th century sealers.
The feature is named after Edward Samuel Ritchie (1814âÂÂ1895), an American inventor and physicist who created a waterborne version of the theodolite used in harbour surveys; in association with other names in the area deriving from the early development or use of geodetic instruments and methods.
Ritchie Rock is located at , which is 2.6 km east-northeast of Tooth Rock, 2.84 km east-southeast of Cape Conway and 1.82 km south-southeast of Pazardzhik Point. Bulgarian mapping in 2009.