The Southeast Commonwealth was one of the thirteen commonwealths of the pre-War United States of America. Created in the early 21st century, it was comprised of the former states of Georgia, South Carolina and North Carolina, and borders the Gulf, East Central and Columbia Commonwealth.
- Broken Banks (mentioned in Point Lookout)
- Mullins (mentioned in Lonesome Road, on the MRE package)
- Charlotte (mentioned in Operation: Anchorage, on the Health dispensers.)
- Georgia, mentioned by the foreman as the place where he enlisted in the United States Army.
The Southeast Commonwealth does not appear in any released Fallout games.