| Oberriet | Oberriet |
| Oberriexingen | Oberriexingen |
| Oberrohrdorf | Oberrohrdorf |
| Oberrot | Oberrot |
| Oberroth | Oberroth |
| Oberrüti | Oberrüti |
| Obersalzberg | Berghof |
| Obersaxen | Obersaxen |
| Oberscheinfeld | Oberscheinfeld |
| Oberschleißheim | Oberschleißheim |
| Oberschneiding | Laberweinting |
| Oberschwarzach | Oberschwarzach |
| Oberschweinbach | Oberschweinbach |
| Oberschönegg | Oberschönegg |
| Oberschützen | Oberschützen |
| Obersiebenbrunn | Obersiebenbrunn |
| Obersiggenthal | Obersiggenthal |
| Obersimmental | Distretto di Obersimmental |
| Obersinn | Obersinn |
| Obersontheim | Obersontheim |
| Oberspreewald-Lausitz | Oberspreewald-Lausitz |
| Oberstadion | Oberstadion |
| Oberstammheim | Oberstammheim |
| Oberstaufen | Oberstaufen |
| Oberstdorf | Oberstdorf |
| Obersteckholz | Obersteckholz |
| Oberstenfeld | Oberstenfeld |
| Oberstgruppenführer | Gradi delle Schutzstaffel |
| Oberstocken | Oberstocken |
| Oberstreu | Oberstreu |
| Obersulm | Obersulm |
| Obersulm-Sülzbach | Obersulm-Sülzbach |
| Obersöchering | Obersöchering |
| Obersüßbach | Obersüßbach |
| Obertaufkirchen | Obertaufkirchen |
| Oberteuringen | Oberteuringen |
| Oberthulba | Oberthulba |
| Obertilliach | Obertilliach |
| Oberto Pelavicino | Oberto Pelavicino |
| Obertraubling | Obertraubling |
| Obertrubach | Obertrubach |
| Obertshausen | Obertshausen |
| Oberurnen | Oberurnen |
| Oberursel | Oberursel |
| Oberuzwil | Oberuzwil |
| Obervellach | Obervellach |
| Oberviechtach | Oberviechtach |
| Oberwald | Oberwald |
| Oberwaltersdorf | Oberwaltersdorf |
| Oberwart | Oberwart |
| Oberweningen | Oberweningen |
| Oberweser | Oberweser |
| Oberwil bei Büren | Oberwil bei Büren |
| Oberwil im Simmental | Oberwil im Simmental |
| Oberwil-Lieli | Oberwil-Lieli |
| Oberwolfach | Oberwolfach |
| Oberá | Oberá |
| Oberägeri | Oberägeri |
| Oberönz | Oberönz |
| Oberösch | Oberösch |
| Oberösterreich | Alta Austria |
| obese | corpulento |
| obeseness | corpulenza |
| obesity | corpulenza |
| obey | obbedire a |
| obeyingly | ubbidientemente |
| Obfelden | Obfelden |
| obfuscate | oscurare |
| obfuscation | oscuramento |
| obfuscatory | accigliato |
| Obi Islands | Obi |
| Obi-Wan Kenobi | Obi-Wan Kenobi |
| Obing | Obing |
| obiter | incidentalmente |
| obituary | necrologio |
| obituary notice | necrologio |
| Objat | Objat |
| object | fine |
| Object Agent Verb | Oggetto Soggetto Verbo |
| Object Constraint Language | Object Constraint Language |
| Object diagram | Object Diagram |
| Object file | Codice oggetto |
| Object lens | Obiettivo fotografico |
| Object Linking and Embedding | Object Linking and Embedding |
| Object Management Group | Object Management Group |
| Object model | Object model |
| Object Oriented Programming | Programmazione orientata agli oggetti |
| Object Pascal | Delphi |
| Object request broker | Object Request Broker |
| object to | dispiacere |
| Object Verb Subject | Oggetto Verbo Soggetto |
| Object-modeling technique | Object Modeling Technique |
| Object-oriented analysis and design | Programmazione orientata agli oggetti |
| Object-oriented langage | Linguaggio a oggetti |
| Object-oriented programming | Programmazione orientata agli oggetti |
| Objectio | Disacconcio |
| objection | obiezione |
