Lenoir Rock (, ) is the rock off the NW coast of Smith Island in the South Shetland Islands, Antarctica 230 m long in southwestâÂÂnortheast direction and 85 m wide with a surface area of 1.29 ha. The vicinity was visited by early 19th century sealers.
The feature is named after ÃÂtienne Lenoir (1744âÂÂ1832), a Belgian-French scientific instrument maker and inventor of the repeating circle; in association with other names in the area deriving from the early development or use of geodetic instruments and methods.
Lenoir Rock is located at , which is 380 m southwest of JireÃÂek Point and 1.85 km northeast of Villagra Point. Bulgarian mapping in 2009 and 2017.