Sweat Mountain, Mountain summit in Cobb County, Georgia, US.

Sweat Mountain is a summit in far northeastern Cobb County, Georgia, reaching 1,688 feet (515 m) above sea level, the second-highest point in the county after Kennesaw Mountain. Its top carries an antenna farm of radio and television transmitters, towers and amateur repeaters, and its northern side holds natural rock formations, including a rock shelter that could hold one or two campers.

The whole mountain was once owned by the Wigley family, and Henry Clay Wigley lived for decades at its base, across from a gravel road that led to the summit. A U.S. Forest Service ranger climbed a fire tower there daily to give smoke coordinates for fire control until satellites took over; the tower is gone, but a benchmark remains in concrete where one of its feet rested. Wigley Road once ran from Sandy Plains Road through to Georgia 92 but was closed in the 1970s after poor maintenance and a spring-fed mudbog.

The mountain's name comes from the Sweat family, early settlers of the area, and nearby roads and schools carry the name too. A lake off Sandy Plains Road at the base hosted a large music festival in the early 1970s. Wigley Road, once a through route to Georgia 92, was closed in the 1970s after a spring-fed mudbog made it impassable.

There is no maintained hiking trail to the summit; the old gravel road up from Wigley Road is closed and barricaded. The summit holds an antenna farm and a benchmark set in concrete where a fire tower foot once rested. Natural rock formations, including a small rock shelter, lie on the northern side.

The summit holds a concrete benchmark marking where one foot of a U.S. Forest Service fire tower once stood; a ranger climbed the tower daily to give smoke coordinates for fire control before satellites took over. The tower was removed as suburbs spread, but the benchmark remains.