Summerlin South, also seen on maps as South Summerlin, is a census-designated place (CDP) in Clark County, Nevada, United States, on the western edge of the Las Vegas Valley and adjacent to the Red Rock Canyon National Conservation Area.

Summerlin South is considered to be one of the most prestigious neighborhoods in the Las Vegas Valley.

[2] The area includes The Ridges, a guard-gated community consisting of custom and semi-custom homes in southwest Summerlin.

[3] It is bounded on the north by Charleston Boulevard, Hualapai Way to the east and Red Rock Canyon National Conservation Area to the west.

Current development expands just below Russell Rd on the south but future developments will expand to Maule Ave.[4] According to the United States Census Bureau, the CDP has a total area of 9.64 square miles (24.97 km2).