Groux Rock (76°13′S 144°47′W / 76.217°S 144.783°W) is an isolated rock outcrop in the northern part of the Phillips Mountains, 5 nautical miles (9 km) east-northeast of Mount June, in the Ford Ranges of Marie Byrd Land, Antarctica. It was mapped by the United States Geological Survey from surveys and U.S. Navy air photos (1959–65), and was named by the Advisory Committee on Antarctic Names for , a U.S. Navy shipfitter with the Byrd Station winter party, 1967.