Southwest Territory or variant, may refer to:

West of the Appalachians, south of the Ohio, east of the Mississippi Territory South of the River Ohio (aka Territory of the South-West), territory that became the state of Tennessee, USA Southwest Territory's at-large congressional district

North American southwest Old Southwest of the American frontier in the USA Southwestern United States, what became of the frontier after the Old West era in the USA Archaic Southwest, the pre-Columbian North American southwest

Other uses Southwest Territory (Six Flags Great America), Gurnee, Illinois, USA; a themepark attraction South West Africa, (South African non-governing territory of the South West), now Namibia Southwestern Krai or Southwestern Land in the historical Russian Empire

See also

Southwest (disambiguation)