| JSAPJ | Japan Society of Air Pollution Journal | In English | → Serial publications, periodicals → Nature → Environment, environmental sciences → Meteorology, climatology |
| LACE | Laboratoire d'Application de la Chimie à l'Environnement | In French | → Research institutes → Nature → Environment, environmental sciences → Chemistry |
| LADA | Land Degradation Assessment in Drylands | In English | → Nature → Environment, environmental sciences → Earth sciences |
| LAEPSI | Laboratoire d'Analyse Environnementale des Procédés et des Systèmes Industriels | In French | → Research institutes → Nature → Environmental technology, water supply, waste management |
| LEGMA | Latvian Environment, Geological and Meterological Agency | In English | → Nature → Environment, environmental sciences → Earth sciences → Meteorology, climatology |
| LIFE | L'Instrument Financier pour l'Environnement | In French | → International relations → European Union → Nature |
| LLT | Language Learning and Technology Journal (http://llt.msu.edu) | In English | → Education → Language, linguistics, literature |
| LNV | Ministerie van Landbouw, Natuur en Voedselkwaliteit (www.minlnv.nl) | In Dutch | → Central administration → Agricultural sciences → Nature and society |
| LSCE | Laboratoire des Sciences du Climat et de l'Environnement | In French | → Environment, environmental sciences → Meteorology, climatology |
| M3E | Modélisation pour l'Énergie, l'Économie, l'Énvironnement | In French | → Economics → Environment, environmental sciences → Energy economics |
| MAE | Mesures Agri-Environnementales | In French | → Nature → Agricultural sciences |
| MAPS | Measurement of Air Pollution from Satellites | In English | → Nature → Meteorology, climatology → Spaceflight engineering, astronautics |
| MDDEP | Ministère du Développement Durable, de l'Environnement et des Parcs du Québec | In French | → Central administration → Nature → Environment, environmental sciences |
| MEDD | Ministère de l'Écologie et du Développement Durable | In French | → Central administration → Nature and society |
| MEE | Ministère de l'Environnement et de l'Eau | In French | → Central administration → Nature and society → Hydrology → 627, |
| MEMMS | Modélisation des Écosystemes Marins et Monitoring par Satellites | In French | → Environment, environmental sciences → Marine research, oceanography → Spaceflight engineering, astronautics |
| MOPITT | Measurements of Pollution in the Troposphere | In English | → Nature → Meteorology, climatology |
| MUT | Masterplan Umwelttechnologie | In German | → Nature |
| NACEC | North American Commission for Environmental Cooperation (www.cec.org) = CCAAN | Comisión para la Cooperación Ambiental de América del Norte | In Spanish = CNACE | Commission Nord-Américaine de Coopération Environnementale | In French = CNACA | Comissão Norte-americana de Cooperação Ambiental | In Portuguese |
In English | → International relations → Nature |
| NAIA | National Animal Interest Alliance (www.naiaonline.org) | In English | → Organizations and associations → Nature and society |
| NARME | Natural Resources Management and Ecological Engineering | In English | → Environment, environmental sciences → Ecology |
| NEAF | National Environmental Advisory Forum | In English | → Organizations and associations → Nature |
| NESDIS | National Environmental Satellite Data and Information Service | In English | → Nature → Spaceflight engineering, astronautics |
| NESS | National Environmental Satellite Service | In English | → Environment, environmental sciences → Spaceflight engineering, astronautics |
| NHC | National Hurricane Center | In English | → Natural disasters |
| NHESS | Natural Hazards and Earth System Sciences | In English | → Serial publications, periodicals → Natural disasters → Earth sciences |
| NLE | National Library for the Environment | In English | → Libraries → Nature |
| NOES | National Operational Environmental Satellite | In English | → Environment, environmental sciences → Spaceflight engineering, astronautics |
| NUA | Niederösterreichische Umweltschutzanstalt | In German | → Nature → Environment, environmental sciences |
| OFBSL | Observatoire de la Foresterie du Bas-Saint-Laurent | In French | → Environment, environmental sciences → Agricultural sciences |
| OFEFP | Office Fédéral de l'Environnement, des Forêts et du Paysage | In French | → Public administration, government → Nature → Forestry |
| OIBT | Organisation Internationale des Bois Tropicaux (www.itto.or.jp) = ITTO | International Tropical Timber Organization | In English = OIMT | Organización Internacional de las Maderas Tropicales | In Spanish |
In French | → Organizations and associations → Nature and society → Timber and woodworking industry |
| OIMT | Organización Internacional de las Maderas Tropicales (www.itto.or.jp) = OIBT, ITTO (look above) |
In Spanish | → Organizations and associations → Nature and society → Timber and woodworking industry |
| OKUNHK | Oficejo de la Kunordiganto de la Unuiĝintaj Nacioj por Helpo kaze de Katastrofo = UNDRO | Office of the United Nations Desaster Relief Coordinator | In English |
In Esperanto | → United Nations → Natural disasters |
| ORE | Observatoire de Recherche en Environnement | In French | → Nature → Environment, environmental sciences |
| ÖVA | Osterreichischer Verein für Altlastenmanagement | In German | → Nature → Environment, environmental sciences |
| PAE | Programme d'Action pour l'Environnement | In French | → Nature and society |
| PAGES | Past Global Changes | In English | → Environment, environmental sciences → Meteorology, climatology |
| PDEDMA | Plan Départemental d'Élimination des Déchets Ménagers et Assimilés | In French | → Nature |
| PEE | Plan Environnement Entreprise | In French | → Nature |
| PNAE-DD | Plan National d'Actions pour l'Environnement et le Développement Durable | In French | → Nature and society |
| PNR | Parc Naturel Régional | In French | → Nature |
| PolAt | Pollution Atmosphérique | In French | → Serial publications, periodicals → Nature and society → Meteorology, climatology |
| POLDEN | Pollution, Déchets, Environnement | In French | → Nature → Environmental technology, water supply, waste management |
| PPA | Plan de Protection de l'Atmosphère | In French | → Nature → Meteorology, climatology |
| PREDIS | Plan Régional d'Élimination des Déchets Industriels Spéciaux | In French | → Nature → Environmental technology, water supply, waste management |
| PRIMEQUAL | Programme de Recherche Interorganismes pour une Meilleure Qualité de l'Air à l'échelle Locale | In French | → Environment, environmental sciences → Meteorology, climatology |
| PRQA | Plan Régional de la Qualité de l'Air | In French | → Nature → Meteorology, climatology |
| PRTR | Pollutant Release and Transfer Register | In English | → Nature and society → Environmental technology, water supply, waste management |
| REC | Regional Environmental Center for Central and Eastern Europe | In English | → Environment, environmental sciences |
| RECOVER | Research on Coping with Vulnerability to Environmental Risk | In English | → Nature → Environment, environmental sciences |
| RESSAC | Recherches en radioécologie sur des Écosystèmes Soumis à des Situations Accidentelles Contrôlées | In French | → Nature |
| REVIVAL | Retrofitting for Environmental Viability Improvement of Valued Architectural Landmarks | In English | → Environment, environmental sciences → Regional planning → Architecture |
| RGII | Regional Greenhouse Gas Initiative | In English | → Nature and society → Meteorology, climatology |
| RIO | Ressourcenverbrauch reduzieren, Innovationen implementieren, Output optimieren | In German | → Nature → Engineering, technology |
| RITEAU | Réseau 'Eau et Technologies de l'environnement' | In French | → Nature → Environmental technology, water supply, waste management |
| RITMER | Réseau 'Pollutions marines accidentelles et conséquences écologiques sur le littoral' | In French | → Nature → Ecology |
| RNOL | Réseau National d'Observation du Littoral | In French | → Environment, environmental sciences |
| RNR | Réserve Naturelle Régionale | In French | → Nature and society |
| RNV | Réserve Naturelle Volontaire | In French | → Nature |
| RSEL | Remote Sensing and Ecology Lab | In English | → Research institutes → 505 |
| RSPB | Royal Society for the Protection of Birds | In English | → Organizations and associations → Nature |
| RSPCA | Royal Society for the Prevention of Cruelty to Animals (www.rspca.org.uk) | In English | → Organizations and associations → Nature and society |
| Safire | Service des Avions Français Instrumentés pour la Recherche en Environnement | In English | → Aeronautics, aircraft → Nature → Environment, environmental sciences |
| SAWTEE | South Asia Watch on Trade, Economics & Environment | In English | → Trade → Nature |
| SDS | Secretaria de Estado do Meio Ambiente e Desenvolvimento Sustentável | In Portuguese | → Nature |
| SEACAM | Secretariat for Eastern African Coastal Area Management | In English | → International relations → Nature and society → Environmental technology, water supply, waste management |
| SEEC | Scottish Energy and Environment Conference | In English | → Organizations and associations → Nature → Energy economics |
| SEEJ | Society of Environmental Engineers Journal | In English | → Serial publications, periodicals → Environment, environmental sciences → Environmental technology, water supply, waste management |
| SERF | Space Environment Research Facility | In English | → Astronomy → Environment, environmental sciences |
| SICTOM | Syndicat Intercommunal de Collecte et Traitement des Ordures Ménagères | In French | → Nature → Environmental technology, water supply, waste management |
| SIE | Système d'Information Environnementale | In French | → Nature → Environment, environmental sciences |
| SMAP | Short and Medium Term Priority Environmental Action Plan | In English | → Nature and society |
| SMDD | Sommet Mondial sur le Développement Durable = CMDS | Cumbre Mundial sobre el Desarrollo Sostenible | In Spanish = WSSD | World Summit on Sustainable Development | In English = CMDS | Cúpula Mundial de Desenvolvimento Sustentável | In Portuguese |
In French | → International relations → Nature and society |
| SME | Système de Management Environnemental | In French | → Nature |
| SMEA | Système de Management Environnemental et d'Audit | In French | → Nature |
| SPA | Société Protectrice des Animaux | In French | → Organizations and associations → Nature and society |
| SPIRAL | Secrétariat pour la Prévention des Pollutions Industrielles et Risques dans l'Agglomération | In French | → Nature |
| SPPPI | Secrétariat Permanent pour la Prévention des Pollutions Industrielles | In French | → Nature |
| SSENR | Schéma de Service des Espaces Naturels et Ruraux | In French | → Nature |
| TBE | Tableau de Bord de l'Environnement | In French | → Nature and society |
| TEMA | Türkiye Erozyonla Mücadele, Ağaçlandırma ve Doğal Varlıkları Koruma Vakfı (www.tema.org.tr) | In Turkish | → Foundations → Nature and society → Forestry |
| UBA | Umweltbundesamt | In German | → Central administration → Environment, environmental sciences |
| UICN | Union Internationale pour la Conservation de la Nature | In French | → Organizations and associations → Nature |
| UNCCD | United Nations Convention to Combat Desertification | In English | → United Nations → Nature and society |
| UNCPIE | Union Nationale des Centres Permanents d’Initiative pour l’Environnement | In French | → Organizations and associations → Nature and society |
| UNDRO | Office of the United Nations Desaster Relief Coordinator = OKUNHK (look above) |
In English | → United Nations → Natural disasters |
| UVP | Umweltverträglichkeitsprüfung | In German | → Nature and society |
| UWS | Urban Wildlife Society (www.urbanwildlifesociety.org) | In English | → Organizations and associations → Environment, environmental sciences → Ecology |
| VEN | Verein zur Erhaltung der Nutzpflanzenvielfalt | In German | → Organizations and associations → Nature and society → Ecology |
| VEN | Vlaams Ecologisch Netwerk | In Dutch | → Organizations and associations → Nature and society |
| VROM | Ministerie van Volkshuisvesting, Ruimtelijke Ordening en Milieubeheer (www.vrom.nl) | In Dutch | → Central administration → Accommodation → Nature and society |
| VSG | Verband zum Schutze des Greifensees | In German | → Organizations and associations → Nature → Environment, environmental sciences |
| VTIU | (Institut für) Verfahrenstechnik des industriellen Umweltschutzes | In German | → Nature |
| WCED | World Commission on Environment and Development | In English | → International relations → Nature and society → Development |
| WFE | Wings For Earth (www.wingsforearth.org) | In English | → Organizations and associations → Nature and society |
| WSSD | World Summit on Sustainable Development = SMDD, CMDS (look above) |
In English | → International relations → Nature and society |
| WUA | Wiener Umweltanwaltschaft (www.wien.gv.at/wua/) | In German | → Municipal administration → Nature and society |
| WWF | World Wide Fund for Nature | In English | → Nature → Environment, environmental sciences |
| WWF | World Wildlife Fund (www.wwf.org) | In English | → Organizations and associations → Nature and society → Environment, environmental sciences |
| ZEP | Zone d'Environnement Protégé | In French | → Regional planning → Nature |
| ZEP | Zero Emission Fossil Fuel Power Plants (www.zero-emissionplatform.eu) | In English | → Energy economics → Nature and society |
| ZICO | Zone d'Inspection Communautaire pour les Oiseaux | In French | → Regional planning → Nature |
| ZICO | Zone Importante pour la Conservation des Oiseaux | In French | → Nature → Zoology |
| ZND | Zone Naturelle Protégée | In French | → Regional planning → Nature |
| ZNE | Zone Naturelle d'Équilibre | In French | → Regional planning → Nature |
| ZNIEFF | Zone Naturelle d'Intérêt Écologique, Faunistique et Floristique | In French | → Regional planning → Environment, environmental sciences → Ecology |
| ZNIEFF | Zone Naturelle d'Intérêt Écologique Faunistique et Floristique | In French | → Environment, environmental sciences → Ecology → Botany → Zoology |
| ZPS | Zone de Protection Spéciale | In French | → Nature |
| ZSC | Zone Spéciale de Conservation | In French | → Regional planning → Nature |
| ZUN | Zentrum für Umwelt- und Naturschutz | In German | → Nature → Environment, environmental sciences |
| БФП | Балтийский Фонд Природы (http://bfn.org.ru) = BFN | Baltic Fund for Nature | In English |
In Russian | → Organizations and associations → Nature and society |
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