South Mountain
- Arizona State Route 202
- Battle of South Mountain
- List of mountain ranges of New Mexico
- Mountain (disambiguation)
- North Dundas, Ontario
- Pine Grove Furnace State Park
- Pine Grove Iron Works
- South (disambiguation)
- South Mountain (Ashland, New York)
- South Mountain (Eastern Pennsylvania)
- South Mountain (La Sal Mountains)
- South Mountain (Maryland and Pennsylvania)
- South Mountain (New Haven County, Connecticut)
- South Mountain (New York)
- South Mountain (Nova Scotia)
- South Mountain (Ulster County, New York)
- South Mountain (West Kill, New York)
- South Mountain (band)
- South Mountain Iron Company
- South Mountain Oil Field
- South Mountain Park
- South Mountain Railroad (Cumberland)
- South Mountain Railway and Mining Company
- South Mountain Reservation
- South Mountain State Park
- South Mountain, Texas
- South Mountains (Arizona)
- South Mountains (Nevada/Utah)
- South Mountains (North Carolina)
- South Mountains State Park
- Southmont (disambiguation)
- 南山 (disambiguation)