| Other Voices | Other Voices |
| Othmarsingen | Othmarsingen |
| Othniel Charles Marsh | Othniel Charles Marsh |
| Otho | Otho |
| otillbörlig | unseemly |
| otillbörligt | unduly |
| otillfredsställande | unsatisfactory |
| otillförlitlighet | unreliability |
| otillgänglig | remote |
| otillgänglighet | inaccessibility |
| otillräcklig | deficient |
| otillräcklighet | inadequacy |
| otillräknelig | non compos mentis |
| otillständig | unseemly |
| otillständighet | indecorum |
| otillåten | illicit |
| otillåtlig | inadmissible |
| Otis Redding | Otis Redding |
| otit | otitis |
| Otjamtjira | Ochamchira |
| otjänlig | inexpedient |
| otjänst | damage |
| Otnäs | Otaniemi |
| Otohime | Toyotama-hime |
| Otokar Březina | Otokar Březina |
| Otomo no Yakamochi | Ōtomo no Yakamochi |
| Otrantosundet | Strait of Otranto |
| otrevlig | antipathetic |
| otrevlig händelse | unpleasant event |
| otrevligt | unpleasantly |
| otrivsam | uncomfortable |
| otro | unbelief |
| otrogen | disloyal |
| otrohet | disloyalty |
| otrolig | farfetched |
| otroliga | unbelievable |
| otrolighet | improbability |
| otroligt | amazingly |
| OTRS | OTRS |
| otrygg | precarious |
| otröstlig | desolate |
| otta | cockcrow |
| Ottaviano Mascherino | Ottaviano Nonni |
| Ottawa | Ottawa |
| Ottawa County | Ottawa County |
| Ottawa Senators | Ottawa Senators |
| Ottawafloden | Ottawa River |
| Ottawafördraget | Ottawa Treaty |
| ottefågel | early bird |
| Otterup kommun | Otterup municipality |
| ottesång | matins |
| Otto | Otto |
| Otto av Österrike | Archduke Otto Franz of Austria |
| Otto Baric | Otto Barić |
| Otto Bauer | Otto Bauer |
| Otto Binswanger | Otto Binswanger |
| Otto den rike | Otto |
| Otto Diels | Otto Diels |
| Otto Dix | Otto Dix |
| Otto Frank | Otto Frank |
