- Australian Centre for Environmental Law
 - Canadian Environmental Law Association (CELA)
- Nonprofit, public interest organisation advocating environmental protection through legislation and citizen action.
- Canadian Institute for Environmental Law and Policy (CIELAP)
- Leadership in the development of environmental law and policy that promotes the public interest and the principles of sustainability.
- Centre for International Sustainable Development Law (CISDL)
- Dedicated to the understanding, development, and implementation of international sustainable development law.
- Earthjustice Legal Defense Fund
- Formerly the Sierra Club Legal Defence Fund. Protects forests, wildlife, water, air, public lands, health, communitites, and international environmental concerns.
- Earthlaw
- Uses the law to defend the West's forests, air, water, and biodiversity.
- ECOLEX
- Provides access to international and national environmental law information primarily to assist developing countries.
- Environmental Integrity Project
- Nonpartisan, nonprofit organisation established in March of 2002 to advocate for more effective enforcement of environmental laws.
- Environmental Law and Policy Center (ELPC)
- A Midwest regional environmental advocacy organisation working on energy, transportation, environmental markets, and forest, land, and water issues in the Great Lakes states.
- Environmental Law Institute (ELI)
- Internationally recognised, independent research and education centre working to advance environmental protection by improving law, policy, and management.
- International Council for Local Environmental Initiatives (ICLEI)
- International environmental agency for local governments.
- National Caucus of Environmental Legislators
- Nonprofit organisation which offers legislators an opportunity to coordinate activities with legislative organisations and share ideas on affirmative and negative environmental issues.
- Sierra Legal Defence Fund
- Protects environment by upholding and enforcing the law including legal representation to individuals and groups fighting environmental battles.
- South Carolina Environmental Law Project (SCELP)
- Nonprofit organisation seeking to protect South Carolina environment through legal advocacy.
- Southern Environmental Law Center
- Dedicated to protecting the natural resources of the southeastern United States.
- Stanford Environmental Law Society
- State Bar of Texas Environmental and Natural Resources Law Section
- Includes an email listserv, job opportunities, and a membership directory.
 UK Environmental Law Association
- University of Victoria - Environmental Law Centre
- Student organisation dedicated to promoting education and discussion about environmental law issues.
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