| oregistrerad | unlicensed |
| oregistrerade | non-licensed |
| Oregon | Oregon |
| Oregon State University | Oregon State University |
| Oregonpetitionen | Oregon Petition |
| Oregons flagga | Flag of Oregon |
| orelaterade | unrelated |
| oren | filthy |
| orena | defile |
| Orena djur | Unclean animals |
| Orenburg | Orenburg |
| Orenburg oblast | Orenburg Oblast |
| orenhet | impurity |
| orenlighet | dirtiness |
| Oreopithecus bambolii | Oreopithecus bambolii |
| orera | declaim |
| orerar | declaims |
| oreserverad | unstinted |
| oresonlig | unreasonable |
| Orestes | Orestes |
| Orfeus | Orpheus |
| Orfeus i underjorden | Orpheus in the Underworld |
| Orfeus och Eurydike | Orpheus |
| Orfism | Orphism |
| organ | organ |
| organell | organelle |
| organisation | setup |
| organisation av rättssystemet | organisation of the legal system |
| organisation av undervisning | organisation of teaching |
| Organisation internationale de la francophonie | Francophonie |
| Organisation Todt | Organisation Todt |
| Organisationen för förbud mot kemiska vapen | Organisation for the Prohibition of Chemical Weapons |
| Organisationen för säkerhet och samarbete i Europa | Organization for Security and Co-operation in Europe |
| Organisationsfrihet | Right of association |
| Organisationsteori | Organizational studies |
| organisatorisk | organizational |
| organisatör | organizer |
| organisera | arrange |
| organisera om | reorganize |
| organiserad | organized |
| organiserad brottslighet | organized crime |
| organiserar | organizing |
| organiserare | organizer |
| organisk | organic |
| organisk förening | organophosphorous compound |
| organisk svavelförening | organosulphur compound |
| Organisk arkitektur | Organic architecture |
| Organisk förening | Organic compound |
| organisk förorening | organic pollutant |
| organisk halogenförening | organohalogen compound |
| organisk kemi | organic chemistry |
| organisk kväveförening | organonitrogen compound |
| Organisk syra | Organic acid |
| organisk syreförening | organooxygen compound |
| organiskt avfall | organic waste |
| organiskt kol | organic carbon |
| organiskt kväve | organic nitrogen |
| organiskt lösningsmedel | organic solvent |
| organiskt material | organic matter |
| organiskt ämne | organic substance |
| organism | body |
| organismer som inte är målorganismer | non-target organism |
| organismsamhälle | community |
| organist | organist |
