| AAPPMA | Association Agréée de Pêche et de Protection des Milieux Aquatiques | In French | → Associations → Fishing, hunting |
| ACE | Action Communautaire pour l'Environnement | In French | |
| ACE | Advisory Committee on the Environment | In English | → Environment, environmental sciences |
| ACF | Australian Conservation Foundation | In English | → Foundations |
| ACMFE | Aquatic Conservation: Marine and Freshwater Ecosystems | In English | → Serial publications, periodicals → Marine research, oceanography |
| ACNA | Action Communautaire pour la Conservation de la Nature | In French | |
| 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 |
| AEA | Agenzia per l'Energia e l'Ambiente (della Provincia di Perugia) | In Italian | → Energy economics |
| AEE | Agence Européenne pour l'Environnement | In French | → International relations |
| AESS | Agenzia per l'Energia e lo Sviluppo Sostenibile (di Modena) | In Italian | → Energy economics |
| AFSSE | Agence Française de Sécurité Sanitaire Environnementale | In French | → Medicine |
| AGENA | Agenzia per l'Energia e l'Ambiente (della Provincia di Teramo) | In Italian | → Energy economics |
| AIEL | Associazione Italiana Energia dal Legno | In Italian | → Associations → Energy economics → Agricultural sciences |
| AIZC | Aménagement Intégré des Zones Côtières | In French | → Regional planning |
| AMA | Agenzia Milanese Mobilita' e Ambiente | In Italian | → Vehicle engineering → Transport and postal services |
| AMINAL | Administratie voor Milieu, Natuur en Landbouw | In Dutch | → Public administration, government → Environment, environmental sciences |
| ANB | Agentschap voor Natuur en Bos | In Dutch | → Environment, environmental sciences |
| ANRED | Agence Nationale de Récupération des Déchets | In French | → Central administration |
| APCC | Association for the Preservation of Cape Cod | In English | → Associations |
| APEA | Agenzia Provinciale Energia ed Ambiente | In Italian | → Energy economics |
| APFM | Associated Program on Flood Management | In English | → Natural disasters → 627 |
| APM | Atmospheric Particle Monitor | In English | → Meteorology, climatology |
| APPMA | Association de Pêche et de Protection des Milieux Aquatiques | In French | → Associations → Fishing, hunting |
| AQA | Agence pour la Qualité de l'Air | In French | → Environmental technology, water supply, waste management |
| ARENE | Agence Régionale de l'Environnement et des Nouvelles Énergies | In French | → 6208 |
| ARPA | Agenzia Regionale per la Protezione dell'Ambiente | In Italian | |
| ARPE | Agence Régionale Pour l'Environnement | In French | |
| ASEH | American Society for Environmental History | In English | → Organizations and associations → History |
| ASPAS | Association pour la Protection des Animaux Sauvages | In French | → Associations |
| ASTE | Association pour le Développement des Sciences et Techniques de l'Environnement | In French | → Associations → Environment, environmental sciences |
| ATEC | Association pour le développement des techniques de Transport, d'Environnement et de Circulation | In French | → Organizations and associations → Vehicle engineering → Transport and postal services |
| ATEnEE | Actions Territoriales pour l'Environnement et l'Efficacité Énergétique | In French | → Energy economics |
| AWF | Alabama Wildlife Federation (www.alabamawildlife.org) | In English | → Organizations and associations → Environment, environmental 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 | → 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 | → Environment, environmental sciences |
| BLI | Bird Life International | In English | → Organizations and associations |
| BMU | Bundesministerium für Umwelt (www.bmu.de) | In German | → Central administration |
| 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 | → Regional planning → 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 |
| 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 |
| 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 → Forestry |
| CCAB-AP | Consejo Centroamericano de Bosques y Áreas Protegidas = (look above) |
In Spanish | → Organizations and associations → Forestry |
| CCAMLR | Convention on the Conservation of Antarctic Marine Living Resources (www.ccamlr.org) | In English | → International relations → Marine research, oceanography |
| CCAP | Consejo Centroamericano de Areas Protegidas | In Spanish | → Organizations and associations |
| 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 | → Fishing, hunting |
| CDB | Convenio sobre la Diversidad Biológica = CBD (look above) |
In Spanish | → United Nations |
| CDB | Convenção sobre a Diversidade Biológica = CBD (look above) |
In Portuguese | → United Nations |
| 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 |
| CEDRE | Centre de Documentation, de Recherche et d'Expérimentations sur les pollutions accidentelles des eaux | In French | → Environment, environmental sciences |
| CEEETA | Centro de Estudos em Economia da Energia, dos Transportes e do Ambiente | In Portuguese | → Research institutes → 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 |
| 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 |
| CERR | Centre d'Écologie des Ressources Renouvelables | In French | → Environment, environmental sciences |
| 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 → Agricultural sciences |
| CITES | Convention on International Trade in Endangered Species of Wild Fauna and Flora | In English | → International relations |
| 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 |
| CNACE | Commission Nord-Américaine de Coopération Environnementale (www.cec.org) = CCAAN, NACEC, CNACA (look above) |
In French | → International relations |
| CNAP | Catalogue des Normes Anti-Pollution | In French | |
| CNUED | Conférence des Nations Unies sur l'Environnement et le Développement | In French | → Development → United Nations, |
| 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 |
| CORINE | Coordination des Informations sur l'Environnement | In French | → Environment, environmental sciences |
| COSSE | Comité pour la Sauvegarde de la Santé et de l'Environnement | In French | → Medicine |
| COVNM | Composés Organiques Volatils Non Méthaniques | In French | → Environment, environmental sciences |
| CRAC | Comité radicalement anti-corrida | In French | → Organizations and associations → Nature and society |
| CRNS | Community Recycling Network for Scotland | In English | → Environmental technology, water supply, waste management |
| CROP | Community Recycling for Organic Produce | In English | → Environment, environmental sciences |
| CSE | Centre for Science and Environment | In English | → Environment, environmental sciences |
| CSE | Centre for Sustainable Energy | In English | → Nature and society → Energy economics |
| CUTEC | Clausthaler Umwelttechnik-Institut | In German | → Environment, environmental sciences → Agricultural sciences |
| DDEN | Direction Départementale de l'Environnement et de la Nature | In French | → Regional administration → Environment, environmental sciences |
| DE | Déclaration Environnementale | In French | |
| DIB | Déchet Industriel Banal | In French | |
| DIREN | Direction Régionale de l'Environnement | In French | → Public administration, government → Environment, environmental sciences |
| DIS | Déchets Industriels Spéciaux | In French | → Environmental technology, water supply, waste management |
| DTQD | Déchets Toxiques en Quantités Dispersées | In French | |
| EAR | Environmental Analysis Report | In English | → Nature and society |
| ECI | Environmental Change Institute | In English | → Earth sciences |
| EDIS | Environmental Data and Information Service | In French | → Libraries → Environment, environmental sciences |
| EEA | European Environment Agency | In English | → Public administration, government |
| 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 | → Environment, environmental sciences |
| EIPPC | European Integrated Pollution Prevention and Control | In English | → Nature and society → European Union |
| EMAS | Environmental Managment and Audit System | In English | |
| 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 |
| ENNNRCP | Ewaso Ng'iro North Natural Resources Conservation Project | In English | → Nature and society |
| ENS | Espaces Naturels Sensibles | In French | → Environment, environmental sciences |
| EPA | Environmental Protection Agency | In English | → Public administration, government → Environment, environmental sciences |
| ERU | Eaux Résiduaires Urbaines | In French | → Hydrology |
| ETAP | Eco-Technologies Action Plan | In English | → Nature and society |
| EVS | Environnement, Ville et Société, Développement Urbain | In French | → 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 |
| FFSPN | Fédération Française des Sociétés de Protection de la Nature | In French | → Organizations and associations |
| FGER | Fonds de Gestion de l'Espace Rural | In French | → Agricultural sciences |
| FIPOL | Fonds International d'Indemnisation des dommages dus à la Pollution par les hydrocarbures | In French | |
| FLAC | Fédération des Luttes Anti-Corrida | In French | → Organizations and associations → Nature and society |
| FNE | France Nature Environnement | In French | → Organizations and associations → Environment, environmental sciences |
| FODM | Friends of Dyke Mar | In English | → Organizations and associations |
| FRAPNA | Fédération Rhône-Alpes de Protection de la Nature | In French | → Organizations and associations → Environment, environmental sciences |
| GEAN | Georgia Environmental Action Network | In English | → Organizations and associations |
| GEF | Global Environmental Fund | In English | → Environment, environmental sciences |
| GEF | Global Environment Facility | In English | → International relations → Environment, environmental sciences |
| GESAMP | Group of Experts on the Scientific Aspects of Marine Environmental Protection | In English | → Environment, environmental sciences |
| GMES | Global Monitoring for Environmental and Security | In English | → Environment, environmental sciences |
| GRACE | Global Resource Action Center for the Environnement | In English | |
| GTVE | Groupe de Travail sur la Vérification Environnementale | In French | → Nature and society → Environment, environmental sciences |
| HEW | Hindu Kush Environmental Watch | In English | |
| 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 → Pharmacology, toxicology |
| ICCAT | International Commission for the Conservation of Atlantic Tunas (www.iccat.es) | In English | → 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 | |
| IES | Institute for Environment and Sustainability | In English | → Environment, environmental sciences |
| IFEN | Institut Français de l'Environnement | In French | → Research institutes → Environment, environmental sciences |
| IFM | Integrated Flood Management | In English | → Natural disasters → 627 |
| INERIS | Institut National de l'Environnement Industriel et des Risques | In French | → Research institutes → Engineering, technology |
| INTERLAND | Innovative Technologies for Remediation of Landfills and Contaminated Soils | In English | → Environment, environmental sciences → Biotechnology → Agricultural sciences |
| IPAAM | Instituto de Proteção Ambiental do Estado do Amazonas | In Portuguese | |
| ISIREMM | Integrated System for Intelligent Regional Environmental Monitoring and Management | In English | → Environment, environmental sciences |
| ISTED | Institut des Sciences et des Techniques de l'Environnement pour le Développement | In French | → 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 → Environment, environmental sciences |
| JEEM | Journal of Environmental and Economics Management | In English | → Serial publications, periodicals → Economics |
| JEnvS | Journal of Environmental Sciences | In English | → Serial publications, periodicals → Environment, environmental sciences |
| JOINTS | Joanneum Research - Institut für Nachhaltige Techniken und Systeme | In German | → Engineering, technology |
| JSAPJ | Japan Society of Air Pollution Journal | In English | → Serial publications, periodicals → Environment, environmental sciences → Meteorology, climatology |
| LACE | Laboratoire d'Application de la Chimie à l'Environnement | In French | → Research institutes → Environment, environmental sciences → Chemistry |
| LADA | Land Degradation Assessment in Drylands | In English | → Environment, environmental sciences → Earth sciences |
| LAEPSI | Laboratoire d'Analyse Environnementale des Procédés et des Systèmes Industriels | In French | → Research institutes → Environmental technology, water supply, waste management |
| LEGMA | Latvian Environment, Geological and Meterological Agency | In English | → Environment, environmental sciences → Earth sciences → Meteorology, climatology |
| LIFE | L'Instrument Financier pour l'Environnement | In French | → International relations → European Union → 50 |
| LNV | Ministerie van Landbouw, Natuur en Voedselkwaliteit (www.minlnv.nl) | In Dutch | → Central administration → Agricultural sciences → Nature and society |
| MAE | Mesures Agri-Environnementales | In French | → Agricultural sciences |
| MAPS | Measurement of Air Pollution from Satellites | In English | → Meteorology, climatology → Spaceflight engineering, astronautics |
| MDDEP | Ministère du Développement Durable, de l'Environnement et des Parcs du Québec | In French | → Central administration → 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, |
| MOPITT | Measurements of Pollution in the Troposphere | In English | → Meteorology, climatology |
| MUT | Masterplan Umwelttechnologie | In German | |
| NACEC | North American Commission for Environmental Cooperation (www.cec.org) = CCAAN, CNACE, CNACA (look above) |
In English | → International relations |
| NEAF | National Environmental Advisory Forum | In English | → Organizations and associations |
| NESDIS | National Environmental Satellite Data and Information Service | In English | → 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 |
| NUA | Niederösterreichische Umweltschutzanstalt | In German | → Environment, environmental sciences |
| OFEFP | Office Fédéral de l'Environnement, des Forêts et du Paysage | In French | → Public administration, government → Forestry |
| OIBT | Organisation Internationale des Bois Tropicaux (www.itto.or.jp) = ITTO, OIMT (look above) |
In French | → Organizations and associations → Nature and society → Timber and woodworking industry |
| OIMT | Organización Internacional de las Maderas Tropicales (www.itto.or.jp) = ITTO, OIBT (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 | → Environment, environmental sciences |
| ÖVA | Osterreichischer Verein für Altlastenmanagement | In German | → Environment, environmental sciences |
| PAE | Programme d'Action pour l'Environnement | In French | → Nature and society |
| PDEDMA | Plan Départemental d'Élimination des Déchets Ménagers et Assimilés | In French | |
| PEE | Plan Environnement Entreprise | In French | |
| PNAE-DD | Plan National d'Actions pour l'Environnement et le Développement Durable | In French | → Nature and society |
| PNR | Parc Naturel Régional | In French | |
| POLDEN | Pollution, Déchets, Environnement | In French | → Environmental technology, water supply, waste management |
| PPA | Plan de Protection de l'Atmosphère | In French | → Meteorology, climatology |
| PREDIS | Plan Régional d'Élimination des Déchets Industriels Spéciaux | In French | → Environmental technology, water supply, waste management |
| PRQA | Plan Régional de la Qualité de l'Air | In French | → Meteorology, climatology |
| PRTR | Pollutant Release and Transfer Register | In English | → Nature and society → Environmental technology, water supply, waste management |
| RECOVER | Research on Coping with Vulnerability to Environmental Risk | In English | → Environment, environmental sciences |
| RESSAC | Recherches en radioécologie sur des Écosystèmes Soumis à des Situations Accidentelles Contrôlées | In French | |
| RGII | Regional Greenhouse Gas Initiative | In English | → Nature and society → Meteorology, climatology |
| RIO | Ressourcenverbrauch reduzieren, Innovationen implementieren, Output optimieren | In German | → Engineering, technology |
| RITEAU | Réseau 'Eau et Technologies de l'environnement' | In French | → Environmental technology, water supply, waste management |
| RITMER | Réseau 'Pollutions marines accidentelles et conséquences écologiques sur le littoral' | In French | → Ecology |
| RNV | Réserve Naturelle Volontaire | In French | |
| RSPB | Royal Society for the Protection of Birds | In English | → Organizations and associations |
| 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 → Environment, environmental sciences |
| SAWTEE | South Asia Watch on Trade, Economics & Environment | In English | → Trade |
| SDS | Secretaria de Estado do Meio Ambiente e Desenvolvimento Sustentável | In Portuguese | |
| 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 → Energy economics |
| SICTOM | Syndicat Intercommunal de Collecte et Traitement des Ordures Ménagères | In French | → Environmental technology, water supply, waste management |