Oostborch, Isle of Cadsand, Netherlands (main entry)
Sluys (directional)
Oostenby, Isle of Oeland, Sweden (main entry)
Borkholm (directional)
Ootatore, Carnatic, Hindoostan (main entry)
Tanjore (directional)
Pondicherry (directional)
Opelousas, St. Landry Parish, Louisiana, United States (main entry)
New Orleans (directional)
Opheim, Bergan, Norway (main entry)
Bergan (directional)
Oporto, Entre Douro e Minho, Portugal (main entry)
Porto (synonym for Oporto, Entre Douro e Minho, Portugal)
England Spain Port wines Lisbon earthquake (1755) Douro River Lisbon (directional)
Oppeln, Prussian States (main entry)
Upper Silesia Oppeln, Oppeln, Prussian States (main entry)
Catholic collegiate church Oder River Breslau (directional)
Oppenheim, Hesse Darmstadt, Germany (main entry)
Rhine River Mentz (directional)
Oppenheim, Montgomery County, New York, United States (main entry)
Mohawk River Oppido, Calabria Ultra, Naples (main entry)
Apennines (Mountains) Reggio (directional)
Oppido, Basilicata, Naples (main entry)
Acerenza (directional)
Oppurg, Meissen, Saxony (main entry)
Neustadt (directional)
Orach, Bosnia, European Turkey (main entry)
Drino River Belgrade (directional)
Oran, Tremecen, Algiers (main entry)
Carthagena, Spain Spaniards Algiers (directional)
Oran, Onondaga County, New York, United States (main entry)
Orange, Vancluse, France (main entry)
Romans
