Martinez ( /mɑrtɨnɛz/ mar-ti-nez) is a census-designated place (CDP) in Columbia County, Georgia, United States. It is an affluent suburb of Augusta, Georgia and is part of the Augusta, Georgia metropolitan area. The population was 27,749 at the 2000 census.
Martinez is located at 33°30′58″N 82°6′0″W / 33.51611°N 82.1°W / 33.51611; -82.1 (33.516089, -82.100024).
According to the United States Census Bureau, the CDP has a total area of 12.7 square miles (32.8 km), of which, 12.6 square miles (32.6 km) of it is land and 0.1 square miles (0.3 km) of it (0.87%) is water.