Resource: Professional Societies
- Institute of Science & Technology
- International Association for Plant Taxonomy
- International Association for Vegetation Science
- International Association of Astronomical Artists
- International Association of Bryologists
- International Association of Business Communicators
- International Association of Hydrogeologists
- International Association of Maritime Institutions
- International Astrobiology Society
- International Coral Reef Initiative
- International Coral Reef Society
- International Council of Biotechnology Associations
- International Council on Clean Transportation
- International Council on Monuments and Sites (ICOMOS)
- International Documentary Association
- International Energy Agency
- International Environmental Communication Association
- International Fund for Animal Welfare
- International League of Conservation Photographers
- International Marine Animal Trainers Association
- International Maritime Organization
- International Maritime Organization
- International Phycological Society
- International Renewable Energy Agency
- International Seabed Authority
- International Society for Biosafety Research
- International Society of Computational Ecology
- International Society of Sustainability Professionals
- International Union for Conservation of Nature
- International Union of Microbiological Societies
- International Women's Writing Guild
- Intersectional Environmentalist
- Investigate Europe
- Investigative Journalism Education Consortium
- Investigative Reporters & Editors
- Iota Sigma Pi
- Iowa Center for Public Affairs Journalism
- Iowa Department of Natural Resources
- IUCN Global Marine Programme
- J. Craig Venter Institute
- JMC Center for Science Communication
- Justice40
- Kansas Department of Health & Environment
- Kentucky Center for Investigative Reporting
- Kentucky Department of Environmental Protection
- Kimbilio Fiction
- Kleinman Center for Energy Policy
- Knight Science Journalism
- Kundiman
- LA Women’s Film Collective