| osmotic | osmótico |
| Osnabrück | Osnabrück |
| Osnago | Osnago |
| Osogbo | Osogbo |
| Osogna | Osogna |
| Osorkon I | Osorkon I |
| Osorkon II | Osorkon II |
| Osorkon III | Osorkon II |
| Osorkon IV | Osorkon IV |
| Osorno Province | Osorno |
| osprey | águia pescadora |
| Osseointegration | Osteointegração |
| osseous | ósseo |
| Ossessione | Rage |
| Ossetia | Ossétia |
| Ossetians | Ossétia |
| Ossetic language | Osseto |
| Ossian | Ossian |
| ossification | ossificação |
| ossify | fossilizar |
| Ossip Zadkine | Ossip Zadkine |
| Ossuccio | Ossuccio |
| Ostalbkreis | Ostalbkreis |
| Ostallgäu | Ostallgäu |
| Ostankino Tower | Torre Ostankino |
| Ostbevern | Ostbevern |
| Osteichthyes | Osteichthyes |
| Ostelsheim | Ostelsheim |
| Osten | Leste |
| Ostend | Oostende |
| Ostende | Oostende |
| ostensible | aparente |
| ostensive | ostensivota |
| ostentation | ostentação |
| ostentatious | espalhafatoso |
| ostentatiously | ostentosamente |
| ostentatioustown | faustoso |
| Osteoglossiformes | Osteoglossiformes |
| osteopath | osteopata |
| Osteopathic medicine | Osteopatia |
| osteoporosis | osteoporose |
| Osteospermum | Dimorphotheca |
| Osterburken | Osterburken |
| Osterholz | Osterholz |
| Osterode | Osterode |
| Osterode am Harz | Osterode |
| Osterøy | Osterøy |
| Ostfildern | Ostfildern |
| Ostholstein | Ostholstein |
| Ostia | Óstia |
| Ostia Antica | Óstia |
| Ostiglia | Ostiglia |
| ostler | estribeiro |
| Ostmark | Ostmark |
| Ostprignitz-Ruppin | Ostprignitz-Ruppin |
| ostracize | expulsar |
| Ostracon | Ostraca |
| Ostrava | Ostrava |
| Ostrava-City District | Ostrava |
| ostrich | avestruz |
| ostrich policy | política do avestruz |
| ostriche | avestruz |
| Ostrobothnia | Ostrobótnia |
| Ostrogoth | Ostrogodo |
| Ostrogothic | Ostrogodo |
| Ostrogoths | Ostrogodos |
| Ostrov | Ilha |
| Ostrya | Ostrya |
| Ostryopsis | Ostryopsis |
| Ostvorpommern | Ostvorpommern |
| Ostwald process | Processo Ostwald |
| Osu Castle | Forte de Christiansborg |
| Osun-Osogbo | Templo de Osun |
| Osuské | Osuské |
| Osvaldo Ardiles | Osvaldo Ardiles |
| Osvaldo Lenine Macedo Pimentel | Osvaldo Lenine Macedo Pimentel |
| Osvaldo Ríos | Osvaldo Ríos |
| Oswald Avery | Oswald Avery |
| Oswald Gracias | Oswald Gracias |
| Oswald Heer | Oswald Heer |
| Oswald Pohl | Oswald Pohl |
| Oswald Spengler | Oswald Spengler |
| Oswaldo Aranha | Osvaldo Aranha |
| Oswego | Oswego |
| Oswiecim | Oświęcim |
| Osório Duque-Estrada | Osório Duque Estrada |
| Otakar II of Bohemia | Ottokar II da Boêmia |
| Otaku no Video | Otaku no Video |
| otalgia | dor de ouvido |
| Otava River | Ottawa |
| Otelfingen | Otelfingen |
| OTEP | Otep |
| Otero County | Condado de Otero |
| Othello | Othello |
| other | outro |
| other mindsliey | mentes alheias |
| other people's | de outras pessoas |
