| AAPPMA | Association Agréée de Pêche et de Protection des Milieux Aquatiques | In French | → Associations → Nature → Fishing, hunting |
| AASQA | Associations Agréées de Surveillance de la Qualité de l'Air | In French | → Associations → Environment, environmental sciences → Meteorology, climatology |
| ABMEE | Agency of Brasov for the Management of Energy and Environment | In English | → Environment, environmental sciences → Energy economics |
| ACE | Action Communautaire pour l'Environnement | In French | → Nature |
| ACE | Advisory Committee on the Environment | In English | → Nature → Environment, environmental sciences |
| ACF | Australian Conservation Foundation | In English | → Foundations → Nature |
| ACMFE | Aquatic Conservation: Marine and Freshwater Ecosystems | In English | → Serial publications, periodicals → Nature → Marine research, oceanography |
| ACNA | Action Communautaire pour la Conservation de la Nature | In French | → Nature |
| ADEME | Agence de l'Environnement et de la Maîtrise de l'Énergie | In French | → Organizations and associations → Nature and society → Energy economics → Environmental technology, water supply, waste management |
| AdWR | Advances in Water Resources | In English | → Serial publications, periodicals → Hydrology → 504062 |
| AEA | Agenzia per l'Energia e l'Ambiente (della Provincia di Perugia) | In Italian | → Nature → Energy economics |
| AEE | Agence Européenne pour l'Environnement | In French | → International relations → Nature |
| AESS | Agenzia per l'Energia e lo Sviluppo Sostenibile (di Modena) | In Italian | → Nature → Energy economics |
| AFSSE | Agence Française de Sécurité Sanitaire Environnementale | In French | → Nature → Medicine |
| AGENA | Agenzia per l'Energia e l'Ambiente (della Provincia di Teramo) | In Italian | → Nature → Energy economics |
| AIEL | Associazione Italiana Energia dal Legno | In Italian | → Associations → Nature → Energy economics → Agricultural sciences |
| AIZC | Aménagement Intégré des Zones Côtières | In French | → Nature → Regional planning |
| AJSR | Australian Journal of Soil Research | In English | → Serial publications, periodicals |
| ALF | Animal Liberation Front | In English | → International relations → Environment, environmental sciences |
| AMA | Agenzia Milanese Mobilita' e Ambiente | In Italian | → Nature → Vehicle engineering → Transport and postal services |
| AMINAL | Administratie voor Milieu, Natuur en Landbouw | In Dutch | → Public administration, government → Nature → Environment, environmental sciences |
| ANB | Agentschap voor Natuur en Bos | In Dutch | → Nature → Environment, environmental sciences |
| ANRED | Agence Nationale de Récupération des Déchets | In French | → Central administration → Nature |
| APCC | Association for the Preservation of Cape Cod | In English | → Associations → Nature |
| APEA | Agenzia Provinciale Energia ed Ambiente | In Italian | → Nature → Energy economics |
| ApEnM | Applied Environmental Microbiology | In English | → Serial publications, periodicals → Microbiology → Environment, environmental sciences |
| APFM | Associated Program on Flood Management | In English | → Natural disasters → 627 |
| APM | Atmospheric Particle Monitor | In English | → Nature → Meteorology, climatology |
| APPMA | Association de Pêche et de Protection des Milieux Aquatiques | In French | → Associations → Nature → Fishing, hunting |
| AQA | Agence pour la Qualité de l'Air | In French | → Nature → Environmental technology, water supply, waste management |
| ARAZPA | Australasian Regional Association of Zoological Parks and Aquaria (www.arazpa.org.au) | In English | → Associations → Nature and society |
| ARENE | Agence Régionale de l'Environnement et des Nouvelles Énergies | In French | → Nature → 6208 |
| ARPA | Agenzia Regionale per la Protezione dell'Ambiente | In Italian | → Nature |
| ARPE | Agence Régionale Pour l'Environnement | In French | → Nature |
| ArS | Archives des Sciences | In French | → Mathematics and natural sciences |
| ASEH | American Society for Environmental History | In English | → Organizations and associations → Nature → History |
| ASPAS | Association pour la Protection des Animaux Sauvages | In French | → Associations → Nature |
| ASTE | Association pour le Développement des Sciences et Techniques de l'Environnement | In French | → Associations → Nature → Environment, environmental sciences |
| ATEC | Association pour le développement des techniques de Transport, d'Environnement et de Circulation | In French | → Organizations and associations → Nature → Vehicle engineering → Transport and postal services |
| ATEnEE | Actions Territoriales pour l'Environnement et l'Efficacité Énergétique | In French | → Nature → Energy economics |
| AtmEn | Atmospheric Environment | In English | → Serial publications, periodicals → Meteorology, climatology → 5043 |
| AWA | Animal Welfare Act | In English | → Nature and society |
| AWF | Alabama Wildlife Federation (www.alabamawildlife.org) | In English | → Organizations and associations → Nature → Environment, environmental sciences |
| AWI | Animal Welfare Institute (www.awionline.org) | In English | → Organizations and associations → Nature and society |
| AWIC | Animal Welfare Information Center (http://awic.nal.usda.gov) | In English | → Organizations and associations → Nature and society |
| BAS | British Antartic Survey | In English | → Environment, environmental sciences → Earth sciences |
| BASIAS | Base des Anciens Sites Industriels et Activités de Service | In French | → Nature and society → Environmental technology, water supply, waste management |
| BASIAS | Base de données des Anciens Sites Industriels et Activités de Service | In French | → Nature → Industry, industrial policy |
| BECC | Border Environment Cooperation Commission = COCEF | Comisión de Cooperación Ecológica Fronteriza | In Spanish = COCEF | Comissão de Cooperação Ecológica Fronteiriça | In Portuguese |
In English | → International relations → Nature and society |
| BEE | Bureau Européen de l'Environnement | In French | → Nature → Environment, environmental sciences |
| BFN | Baltic Fund for Nature (http://bfn.org.ru) = БФП | Балтийский Фонд Природы | In Russian |
In English | → Organizations and associations → Nature and society |
| BfN | Bundesamt für Naturschutz (www.bfn.de) | In German | → Central administration → Nature → Environment, environmental sciences |
| BioTreaT | Biological Treatment and Recycling Technologies | In English | → 50406 → Environmental technology, water supply, waste management |
| BLI | Bird Life International | In English | → Organizations and associations → Nature |
| BMU | Bundesministerium für Umwelt (www.bmu.de) | In German | → Central administration → Nature |
| BOMECV | Bulletin Officiel du Ministère de l'Environnement et du Cadre de Vie | In French | → Serial publications, periodicals → Central administration → Nature and society |
| BOMULTE | Bulletin Officiel du Ministère de l'Urbanisme, du Logement, des Transports et de l'Environnement | In French | → Serial publications, periodicals → Central administration → Transport and postal services → Nature and society, |
| CAFE | Clean Air for Europe | In English | → Nature and society → European Union |
| CAUE | Conseil d'Architecture, d'Urbanisme et d'Environnement | In French | → Nature → Regional planning → Architecture |
| CAUE | Conseil en Architecture, Urbanisme et Environnement | In French | → Environment, environmental sciences → Architecture |
| CBD | Convention on Biological Diversity = CDB | Convenio sobre la Diversidad Biológica | In Spanish = CDB | Convenção sobre a Diversidade Biológica | In Portuguese |
In English | → United Nations → Nature |
| CBSG | Conservation Breeding Specialist Group (www.cbsg.org) | In English | → Organizations and associations → Nature and society |
| CCAAN | Comisión para la Cooperación Ambiental de América del Norte (www.cec.org) = NACEC | North American Commission for Environmental Cooperation | In English = CNACE | Commission Nord-Américaine de Coopération Environnementale | In French = CNACA | Comissão Norte-americana de Cooperação Ambiental | In Portuguese |
In Spanish | → International relations → Nature |
| CCAB-AP | Conselho Centro-americano de Florestas e Áreas Protegidas = CCAB-AP | Consejo Centroamericano de Bosques y Áreas Protegidas | In Spanish |
In Portuguese | → Organizations and associations → Nature → Forestry |
| CCAB-AP | Consejo Centroamericano de Bosques y Áreas Protegidas = (look above) |
In Spanish | → Organizations and associations → Nature → Forestry |
| CCAMLR | Convention on the Conservation of Antarctic Marine Living Resources (www.ccamlr.org) | In English | → International relations → Nature → Marine research, oceanography |
| CCAP | Consejo Centroamericano de Areas Protegidas | In Spanish | → Organizations and associations → Nature |
| CCPA | Conseil Canadien de Protection des Animaux | In French | → Organizations and associations → Nature and society |
| CCSBT | Commission for the Conservation of Southern Bluefin Tuna | In English | → Nature → Fishing, hunting |
| CDB | Convenção sobre a Diversidade Biológica = CBD (look above) |
In Portuguese | → United Nations → Nature |
| CDB | Convenio sobre la Diversidad Biológica = CBD (look above) |
In Spanish | → United Nations → Nature |
| CDERA | Caribbean Disaster Emergency Response Agency (www.cdera.org) | In English | → Organizations and associations → Natural disasters |
| CEC | Commission for Environmental Cooperation | In English | → Organizations and associations → International relations → Nature |
| CEDRE | Centre de Documentation, de Recherche et d'Expérimentations sur les pollutions accidentelles des eaux | In French | → Nature → Environment, environmental sciences |
| CEEETA | Centro de Estudos em Economia da Energia, dos Transportes e do Ambiente | In Portuguese | → Research institutes → Nature → Energy economics → Applied sciences, technology |
| CEIRD | Center of Environmental Issues and Regional Development | In English | → Nature and society → Regional planning |
| CEN | Creative Environmental Networks | In English | → Organizations and associations → Nature |
| CEPIS | Centro Panamericano de Ingeniería Sanitaria y Ciencias del Ambiente (www.cepis.ops-oms.org) = CEPIS | Centro Pan-americano de Engenharia Sanitária e Ciências do Ambiente | In Portuguese |
In Spanish | → Organizations and associations → Environment, environmental sciences → Medicine |
| CEPIS | Centro Pan-americano de Engenharia Sanitária e Ciências do Ambiente (www.cepis.ops-oms.org) = (look above) |
In Portuguese | → Organizations and associations → Environment, environmental sciences → Medicine |
| CEPREDENAC | Centro de Coordinación para la Prevención de los Desastres Naturales en América Central = CEPREDENAC | Centro de Coordenação para a Prevenção de Desastres Naturais na América Central | In Portuguese |
In Spanish | → Natural disasters |
| CEPREDENAC | Centro de Coordenação para a Prevenção de Desastres Naturais na América Central = (look above) |
In Portuguese | → Natural disasters |
| CEREGE | Centre Européen de Recherche et d'Enseignement des Géosciences de l'Environnement | In French | → Education → Earth sciences → Environment, environmental sciences |
| CERR | Centre d'Écologie des Ressources Renouvelables | In French | → Nature → Environment, environmental sciences |
| CESTMed | Centre d'Étude et de Sauvegarde des Tortues marines de Méditerranée | In French | → Environment, environmental sciences → Zoology |
| CFME | Centre de Formation aux Métiers de l'Environnement | In French | → Education → Environment, environmental sciences → Environmental technology, water supply, waste management |
| CICTA | Commission Internationale pour la Conservation des Thonidés de l'Atlantique | In French | → International relations → Nature and society → Fishing, hunting |
| CIRDN | Comité Interamericano para la Reducción de los Desastres Naturales = IACNDR | Inter-American Committee on Natural Disaster Reduction | In English = CIRDN | Comitê Interamericano sobre a Redução de Desastres Naturais | In Portuguese |
In Spanish | → Organizations and associations → Natural disasters |
| CIRDN | Comitê Interamericano sobre a Redução de Desastres Naturais = IACNDR (look above) |
In Portuguese | → Organizations and associations → Natural disasters |
| CIRED | Centre International de Recherches sur l'Environnement et le Développement | In French | → Research institutes → Nature → Agricultural sciences |
| CITES | Convention on International Trade in Endangered Species of Wild Fauna and Flora | In English | → International relations → Nature |
| CMDS | Cúpula Mundial de Desenvolvimento Sustentável = CMDS | Cumbre Mundial sobre el Desarrollo Sostenible | In Spanish = WSSD | World Summit on Sustainable Development | In English = SMDD | Sommet Mondial sur le Développement Durable | In French |
In Portuguese | → International relations → Nature and society |
| CMDS | Cumbre Mundial sobre el Desarrollo Sostenible = WSSD, SMDD (look above) |
In Spanish | → International relations → Nature and society |
| CMPP | Centre Marocain de Production Propre (www.cmpp.ma) | In French | → Nature and society |
| CNACA | Comissão Norte-americana de Cooperação Ambiental (www.cec.org) = CCAAN, NACEC, CNACE (look above) |
In Portuguese | → International relations → Nature |
| CNACE | Commission Nord-Américaine de Coopération Environnementale (www.cec.org) = CCAAN, NACEC, CNACA (look above) |
In French | → International relations → Nature |
| CNAP | Catalogue des Normes Anti-Pollution | In French | → Nature |
| CNUED | Conférence des Nations Unies sur l'Environnement et le Développement | In French | → Development → United Nations → Nature, |
| COCEF | Comissão de Cooperação Ecológica Fronteiriça = BECC (look above) |
In Portuguese | → International relations → Nature and society |
| COCEF | Comisión de Cooperación Ecológica Fronteriza = BECC (look above) |
In Spanish | → International relations → Nature and society |
| COMORE | Contrôle et Modélisation de Ressources Renouvelables | In French | → Computer science → Nature |
| COREO | Consortium of Regional Ecological Observatories | In English | → Organizations and associations → Environment, environmental sciences → Ecology |
| CORINE | Coordination des Informations sur l'Environnement | In French | → Nature → Environment, environmental sciences |
| COSSE | Comité pour la Sauvegarde de la Santé et de l'Environnement | In French | → Nature → Medicine |
| COVNM | Composés Organiques Volatils Non Méthaniques | In French | → Nature → Environment, environmental sciences |
| CRAC | Comité radicalement anti-corrida | In French | → Organizations and associations → Nature and society |
| CRNS | Community Recycling Network for Scotland | In English | → Nature → Environmental technology, water supply, waste management |
| CROP | Community Recycling for Organic Produce | In English | → Nature → Environment, environmental sciences |
| CSE | Centre for Sustainable Energy | In English | → Nature and society → Energy economics |
| CSE | Centre for Science and Environment | In English | → Nature → Environment, environmental sciences |
| CUTEC | Clausthaler Umwelttechnik-Institut | In German | → Nature → Environment, environmental sciences → Agricultural sciences |
| DDEN | Direction Départementale de l'Environnement et de la Nature | In French | → Regional administration → Nature → Environment, environmental sciences |
| DE | Déclaration Environnementale | In French | → Nature |
| DIB | Déchet Industriel Banal | In French | → Nature |
| DIREN | Direction Régionale de l'Environnement | In French | → Public administration, government → Nature → Environment, environmental sciences |
| DIS | Déchets Industriels Spéciaux | In French | → Nature → Environmental technology, water supply, waste management |
| DTQD | Déchets Toxiques en Quantités Dispersées | In French | → Nature |
| DWR | Department of Water Resources | In English | → Environment, environmental sciences → Hydrology |
| EAR | Environmental Analysis Report | In English | → Nature and society |
| ECI | Environmental Change Institute | In English | → Nature → Earth sciences |
| EDD | Éducation au Développement Durable | In French | → Education → Nature and society |
| EDD | Environnement et Développement Durable | In French | → Nature and society |
| EDIS | Environmental Data and Information Service | In French | → Libraries → Nature → Environment, environmental sciences |
| EE | Éducation à l'Environnement | In French | → Education → Environment, environmental sciences |
| EEA | European Environment Agency | In English | → Public administration, government → Nature |
| EEA | European Environmental Agency | In English | → Organizations and associations → Nature and society → Environment, environmental sciences → International economic cooperation |
| EIE | Évaluation d'Impact sur l'Environnement | In French | → Nature and society |
| EIONET | European Environment Information & Observation Network | In English | → Nature → Environment, environmental sciences |
| EIPPC | European Integrated Pollution Prevention and Control | In English | → Nature and society → European Union |
| ELF | Earth Liberation Front | In English | → International relations → Environment, environmental sciences |
| EMAS | Environmental Managment and Audit System | In English | → Nature |
| EMF | Ecological Management Foundation | In English | → Foundations → Nature and society |
| ENAC | Environnement Naturel Architectural et Construit | In French | → Nature and society → Regional planning → Environmental technology, water supply, waste management |
| EnEng | Environmental Engineering | In English | → Serial publications, periodicals → Engineering, technology → Environment, environmental sciences |
| ENNNRCP | Ewaso Ng'iro North Natural Resources Conservation Project | In English | → Nature and society |
| ENS | Espaces Naturels Sensibles | In French | → Nature → Environment, environmental sciences |
| EnST | Environmental Science Technology | In English | → Serial publications, periodicals → Engineering, technology → Environment, environmental sciences |
| EnTox | Environmental Toxicology | In English | → Serial publications, periodicals → Environment, environmental sciences |
| Env | Environmentrics | In English | → Serial publications, periodicals → Engineering, technology → Environment, environmental sciences |
| ENVISAT | Environmental Satellite | In English | → Environment, environmental sciences → Spaceflight engineering, astronautics |
| EPA | Environmental Protection Agency | In English | → Public administration, government → Nature → Environment, environmental sciences |
| EPER | European Pollutant Emission Register | In English | → 503 |
| ERIN | Earth Resources Information Network | In English | → Environment, environmental sciences → Earth sciences |
| ERS | Environmental Research Satellite | In English | → Environment, environmental sciences → Spaceflight engineering, astronautics |
| ERU | Eaux Résiduaires Urbaines | In French | → Nature → Hydrology |
| ESSA | Environmental Sciences Services Administration | In English | → Environment, environmental sciences |
| ETAP | Eco-Technologies Action Plan | In English | → Nature and society |
| ETWQ | Environmental Toxicology and Water Quality | In English | → Serial publications, periodicals → Environment, environmental sciences → Hydrology |
| EVS | Environnement, Ville et Société, Développement Urbain | In French | → Nature → Regional planning |
| EWG | Environmental Working Group (www.ewg.org) | In English | → Organizations and associations → Nature and society → Environment, environmental sciences |
| EXCIFF | European Exchange Circle on Flood Forecasting | In English | → Natural disasters → 627 |
| FFEM | Fonds Français pour l'Environnement Mondial | In French | → Finance → Nature and society |
| FFR | Friends for Rivers (www.ffr.org) | In English | → Organizations and associations → Nature |
| FFSPN | Fédération Française des Sociétés de Protection de la Nature | In French | → Organizations and associations → Nature |
| FGER | Fonds de Gestion de l'Espace Rural | In French | → Nature → Agricultural sciences |
| FIPOL | Fonds International d'Indemnisation des dommages dus à la Pollution par les hydrocarbures | In French | → Nature |
| FLAC | Fédération des Luttes Anti-Corrida | In French | → Organizations and associations → Nature and society |
| FNE | France Nature Environnement | In French | → Organizations and associations → Nature → Environment, environmental sciences |
| FODM | Friends of Dyke Mar | In English | → Organizations and associations → Nature |
| FRAPNA | Fédération Rhône-Alpes de Protection de la Nature | In French | → Organizations and associations → Nature → Environment, environmental sciences |
| G2E | Géologie, Eau et Environnement | In French | → Education → Environment, environmental sciences → Earth sciences |
| GBIF | Global Biodiversity Information Facility | In English | → Environment, environmental sciences |
| GEAN | Georgia Environmental Action Network | In English | → Organizations and associations → Nature |
| GEF | Global Environmental Fund | In English | → Nature → Environment, environmental sciences |
| GEF | Global Environment Facility | In English | → International relations → Nature → Environment, environmental sciences |
| GEMS | Global Environmental Monitoring System | In English | → Environment, environmental sciences |
| GESAMP | Group of Experts on the Scientific Aspects of Marine Environmental Protection | In English | → Nature → Environment, environmental sciences |
| GMES | Global Monitoring for Environmental and Security | In English | → Nature → Environment, environmental sciences |
| GOES | Geostationary Operational Environmental Satellite | In English | → Environment, environmental sciences → Spaceflight engineering, astronautics |
| GRACE | Global Resource Action Center for the Environnement | In English | → Nature |
| GTVE | Groupe de Travail sur la Vérification Environnementale | In French | → Nature and society → Environment, environmental sciences |
| HEW | Hindu Kush Environmental Watch | In English | → Nature |
| HMR | Helgoland Marine Research | In English | → Serial publications, periodicals → 50146 → Hydrology |
| HQE | Haute Qualité Environnementale | In French | → Quality management → Nature and society → Environmental technology, water supply, waste management |
| IACNDR | Inter-American Committee on Natural Disaster Reduction = CIRDN (look above) |
In English | → Organizations and associations → Natural disasters |
| IAPS | International Association for People-environment Studies | In English | → Associations → Nature and society |
| IBT | Internationaler Bund der Tierversuchsgegner (www.tierversuchsgegner.at) | In German | → Organizations and associations → Nature → Pharmacology, toxicology |
| ICCAT | International Commission for the Conservation of Atlantic Tunas (www.iccat.es) | In English | → Nature → Fishing, hunting |
| ICPDR | International Commission for the Protection of the Danube River | In English | → Organizations and associations → Nature and society → 627 |
| ICPE | Installation Classée pour la Protection de l'Environnement | In French | → Nature |
| IDEMU | Institut de l'Écologie en Milieu Urbain | In French | → Environment, environmental sciences → Ecology |
| IES | Institute for Environment and Sustainability | In English | → Nature → Environment, environmental sciences |
| IFEN | Institut Français de l'Environnement | In French | → Research institutes → Nature → Environment, environmental sciences |
| IFM | Integrated Flood Management | In English | → Natural disasters → 627 |
| IFM | Institut Français de la Mer | In French | → Research institutes → Environment, environmental sciences → Marine research, oceanography |
| INERIS | Institut National de l'Environnement Industriel et des Risques | In French | → Research institutes → Nature → Engineering, technology |
| INTERLAND | Innovative Technologies for Remediation of Landfills and Contaminated Soils | In English | → Nature → Environment, environmental sciences → Biotechnology → Agricultural sciences |
| IPAAM | Instituto de Proteção Ambiental do Estado do Amazonas | In Portuguese | → Nature |
| ISE | Istituto per lo Studio degli Ecosistemi | In Italian | → Environment, environmental sciences |
| ISIREMM | Integrated System for Intelligent Regional Environmental Monitoring and Management | In English | → Nature → Environment, environmental sciences |
| ISPL | Institut Pierre-Simon Laplace (des Sciences de l'Environnement Global) | In French | → Environment, environmental sciences |
| ISTED | Institut des Sciences et des Techniques de l'Environnement pour le Développement | In French | → Nature → Agricultural sciences |
| ITTO | International Tropical Timber Organization (www.itto.or.jp) = OIBT | Organisation Internationale des Bois Tropicaux | In French = OIMT | Organización Internacional de las Maderas Tropicales | In Spanish |
In English | → Organizations and associations → Nature and society → Timber and woodworking industry |
| IUT | Institut für Umwelttechnik | In German | → Agricultural sciences → Nature → Environment, environmental sciences |
| JEEM | Journal of Environmental and Economics Management | In English | → Serial publications, periodicals → Economics → Nature |
| JEnvS | Journal of Environmental Sciences | In English | → Serial publications, periodicals → Nature → Environment, environmental sciences |
| JGOFS | Joint Global Ocean Flux Study | In English | → Marine research, oceanography → Environment, environmental sciences |
| JMS | Journal of Marine Systems | In English | → Serial publications, periodicals → Environment, environmental sciences → Marine research, oceanography |
| JOINTS | Joanneum Research - Institut für Nachhaltige Techniken und Systeme | In German | → Nature → Engineering, technology |
| 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 |