| Ottokar II of Bohemia | Ottokar II van Bohemen |
| Ottokar II of Styria | Ottokar II van Stiermarken |
| Ottokar III of Styria | Ottokar III van Stiermarken |
| ottoman | ottomane |
| Ottoman Dynasty | Lijst van Ottomaanse sultans |
| Ottoman Empire | Ottomaanse Rijk |
| Ottoman Greece | Ottomaans Griekenland |
| Ottoman Hungary | Ottomaans Hongarije |
| Ottoman military band | Mehter Marsi |
| Ottoman Turkish language | Osmaans |
| Ottoman Turks | Turkse volkeren |
| Ottone Visconti | Ottone Visconti |
| Ottonian | Liudolfingen |
| Ottonian dynasty | Liudolfingen |
| Ottorino Respighi | Ottorino Respighi |
| Ottrau | Ottrau |
| Ottweiler | Ottweiler |
| Otwock | Otwock |
| Otwock County | Powiat Otwocki |
| Otxandio | Otxandio |
| Otzberg | Otzberg |
| Otzing | Otzing |
| Otzweiler | Otzweiler |
| Ouabain | Ouabaïne |
| Ouagadougou | Ouagadougou |
| Ouarzazate | Ouarzazate |
| oubliette | kerker |
| ouch | ai |
| Oud | Ud |
| Oud-Heverlee Leuven | Oud-Heverlee Leuven |
| Oude IJssel | Oude IJssel |
| Oude Kerk | Oude Kerk |
| Oude Maas | Oude Maas |
| Oude Niedorp | Oude Niedorp |
| Oude Rijn | Oude Rijn |
| Oudenaarde | Oudenaarde |
| Oudomxai Province | Khwaeng Udomxai |
| Oudomxay Province | Khwaeng Udomxai |
| Oued Ed-Dahab-Lagouira | Oued ed Dahab-Lagouira |
| Ouen | Ouen |
| Ouessant | Ouessant |
| Ouest Department | Ouest |
| ought to | moeten |
| Ouidah | São João Baptista de Ajudá |
| Ouistiti | Klauwaapje |
| Oujda | Oujda |
| Oulainen | Oulainen |
| Oulanka National Park | Oulanka Nationaal Park |
| Oulens-sous-Echallens | Oulens-sous-Echallens |
| Oulens-sur-Lucens | Oulens-sur-Lucens |
| Oulipo | Oulipo |
| Oulton Park | Oulton Park Circuit |
| Oulu | Oulu |
| Oulu Province | Oulu |
| Oulu railway station | Oulu |
| Oulujoki | Oulujoki |
| Oulujärvi | Oulu |
| Oulun Luistinseura | OLS Oulu |
| Oulun Palloseura | OPS Oulu |
| Oulunsalo | Oulunsalo |
| ounce | ons |
| our | ons |
| Our Airline | Our Airline |
| Our Blushing Brides | Our Blushing Brides |
| Our Dancing Daughters | Our Dancing Daughters |
| Our Gang | Our Gang |
| Our Hospitality | Our Hospitality |
| Our Lady | Onze Lieve Vrouwe |
| Our Lady of Fatima | Onze-Lieve-Vrouw van Fátima |
| Our Lady of Guadalupe | Onze-Lieve-Vrouw van Guadalupe |
| Our Lady of Mount Carmel | Heilige Maagd Maria van de berg Karmel |
| Our Lady of Sorrows | Onze-Lieve-Vrouw van Smarten |
| Our Lady of the Rocks | Gospa od Škrpjela |
| Our Lady of the Rosary | Heilige Maagd Maria van de Rozenkrans |
| Our Lady the Garden Enclosed | Kluizenarij Onze-Lieve-Vrouwe van de Besloten Tuin |
| Our Land | Maamme |
| Our Lips Are Sealed | Our Lips Are Sealed |
| Our Love to Admire | Our Love to Admire |
| Our Man in Havana | Our Man in Havana |
| Our Mother of Perpetual Help | Onze-Lieve-Vrouw van Altijddurende Bijstand |
| Our River | Our |
