| organic food | naturlig föda |
| Organic light-emitting diode | OLED |
| Organic manure | Gödsel |
| organic matter | organiskt material |
| organic nitrogen | organiskt kväve |
| Organic nomenclature | IUPAC-nomenklatur |
| organic pollutant | organisk förorening |
| organic pollution | organisk förorening |
| organic solvent | organiskt lösningsmedel |
| organic substance | organiskt ämne |
| organic waste | organiskt avfall |
| organisation | organisation |
| Organisation for Economic Co-operation and Development | OECD |
| Organisation for the Prohibition of Chemical Weapons | Organisationen för förbud mot kemiska vapen |
| Organisation of African Unity | OAU |
| organisation of teaching | organisation av undervisning |
| organisation of the legal system | organisation av rättssystemet |
| Organisation Todt | Organisation Todt |
| organise | organisera |
| organism | organism |
| Organismós Sidirodrómon Elládos | OSE |
| organist | organist |
| organization | förbund |
| Organization for Security and Co-operation in Europe | Organisationen för säkerhet och samarbete i Europa |
| Organization of American States | Organization of American States |
| Organization of Arab Petroleum Exporting Countries | OAPEC |
| Organization XIII | Organization XIII |
| organizational | organisatorisk |
| Organizational memory | Minne |
| Organizational studies | Organisationsteori |
| Organizationally Unique Identifier | OUI |
| organize | ordna |
| organized | organiserad |
| organized crime | organiserad brottslighet |
| organizer | organisatör |
| organizing | organiserar |
| organochlorine compound | klorerat kolväte |
| organohalogen compound | organisk halogenförening |
| organoleptic property | organoleptisk egenskap |
