Bornholm, Oelan (Island), Sweden Calmar (directional)
Oels, Oels, Breslau, Prussian Silesia (main entry)
Brunswick, Duke of Oels River Breslau (directional)
Oelsnitz, Saxony (main entry)
Elster River Plauen (directional)
Oepen, Limburg, Netherlands (main entry)
Eupen (synonym for Oepen, Limburg, Netherlands)
Weze River Limburg (directional)
Oesel (Island) (main entry)
Baltic Sea Livonia Gulf of Riga Russia Arensberg, Oesel (Island) Oetting, Bavaria (main entry)
Inn River Burkhausen (directional)
Oetting, Bavaria (main entry)
Wirnitz River Anspach (directional)
Munich (directional)
Offa's Dike (main entry)
Offa's Dike England Offa, Saxon King England, United Kingdom Welsh Herefordshire, United Kingdom Shropshire, United Kingdom Montgomeryshire, United Kingdom Denbighshire, United Kingdom Flintshire, United Kingdom Wye River Dee River Offanto River (main entry)
Naples Apennines (Mountains) Conza Monte Verde Capitanata Basilicata Terra di Bari Gulf of Venice Barletta Aufidus (synonym for Offanto River)
Offen (main entry)
Buda Offenbach, Hesse Darmstadt, Germany (main entry)
Maine River Frankfort (directional)
Offenburg, Baden (main entry)
Kintzig River Strasburg (directional)
Offide, Ancona, Italy (main entry)
Loretto (directional)
Offutts, Hampshire County, Virginia, United States (main entry)
Ogden, Monroe County, New York, United States (main entry)
Rochester (directional)
Ogden, Scott County, Missouri, United States Ogdensburg, St. Lawrence County, New York, United States (main entry)
St. Lawrence River Oswegatchie River Lake Ontario Montreal (directional)
Ogechee River (main entry)
Georgia, United States Atlantic Ocean Savannah (directional)
Ogersheim, Rhine, Bavaria (main entry)
Spire (directional)
Oglethorpe County, Georgia, United States (main entry)
Lexington, Oglethorpe County, Georgia, United States Oglio River (main entry)
Trent Italy Begamasco Bresciano Isero (Lake) Milanese Mantuan Po River Borgoforte Ogmo, Siam (main entry)
Gulf of Siam Siam (directional)
Oheteroa (Island) (main entry)
South Pacific Ocean
