• Carlsburg, Schlei, a settlement at the Schlei river, Germany, at the site of ancient Gereby
• Carlsburg, Weser
  Carlsburg, Weser
  Carlsburg was a 17th century fortified town in Swedish Bremen-Verden at the confluence of the Weser and Geeste rivers, at the site of modern Bremerhaven, Germany. Planned to compete with Bremen, the settlement did not prosper....
  
  , a former Swedish settlement at the Weser river, Germany, at the site of current Bremerhaven

See also

• Carlsberg (disambiguation)
• Carlsborg, Washington
  Carlsborg, Washington
  Carlsborg is a census-designated place in Clallam County, Washington, United States. The population was 855 at the 2000 census.-History:Carlsborg was founded in 1915 by C.J. Erickson, and named after his hometown in Sweden...
  
  
• Karlsborg
  Karlsborg
  Karlsborg is a locality and the seat of Karlsborg Municipality, Västra Götaland County, Sweden. It had 3,574 inhabitants in 2005. This garrison town lies at the shore of lake Vättern in Västergötland.-History:...
  
  
• Karlsburg (disambiguation)