| oral | oral |
| Oral and maxillofacial surgery | Chirurgie maxillo-faciale |
| Oral consonant | Consonne orale |
| Oral Fixation Tour | Oral Fixation Tour |
| Oral hygiene | Hygiène bucco-dentaire |
| Oral intercourse | Coït buccal |
| Oral law | Loi orale |
| Oral literature | Littérature orale |
| Oral question | Question orale |
| oral sex | sexe oral |
| Oral tradition | Tradition orale |
| orally | verbalement |
| Oran | Oran |
| orang | orang-outan |
| Orang Asli | Orang Asli |
| Orang laut | Orang Laut |
| Orang Pendek | Orang pendek |
| orang-outang | orang-outan |
| orang-utan | orang-outan |
| orange | orange |
| Orange Alternative | Alternative orange |
| Orange Bowl | Orange Bowl |
| Orange County Choppers | Orange County Choppers |
| Orange Ekstraklasa | Championnat de Pologne de football |
| Orange España | Orange |
| orange juice | jus d'orange |
| Orange lily | Lilium bulbiferum |
| Orange Livebox | Livebox |
| orange peel | zeste d'orange |
| Orange Polska | Orange |
| Orange Prize for Fiction | Orange |
| Orange Range | Orange Range |
| Orange Revolution | Révolution orange |
| Orange River | Orange |
| Orange Romania | Orange România |
| Orange SA | Orange |
| Orange Swift | Sylvine |
| Orange-bellied Parrot | Perruche à ventre orange |
| Orange-breasted Falcon | Faucon orangé |
| Orange-Cheeked Waxbill | Astrild à joues orange |
| Orange-footed Scrubfowl | Megapodius reinwardt |
| Orange-fronted Parakeet | Aratinga canicularis |
| Orange-lined triggerfish | Balistapus undulatus |
| orange-red | roux |
| Orange-winged Amazon | Amazone aourou |
| orangeade | orangeade |
| Orangeman | Orangiste |
| orangery | orangerie |
| Orangism | Orangisme |
| orangoutan | orang-outan |
| orangoutang | orang-outan |
| orangutan | orang-outan |
| Orania | Orania |
| Oranienburg | Oranienburg |
| Oranjestad | Oranjestad |
