- Center for Respect of Life and Environment - Awaken people's ecological sensibilities.
- Committee for the National Institute for the Environment - NGO working to create a strengthen the policy role of environmental science through the creation of an independent, non-regulatory National Institute for the Environment.
- The Competitive Enterprise Institute - Covers environmental issues from a free-market environmentalist position
- Environmental Action! - 20/20 Vision is a nonprofit grassroots environmental and peace organization that provided targeted action alerts for citizens every month.
- Global Environment Facility - The Global Environment Facility (GEF) is a financial mechanism that provides grants and concessional funds to developing countries for projects and activities that aim to protect the global environment.
- National Parks and Conservation Association (NPCA) was established in 1919, America's only private, nonprofit organization dedicated solely to protecting, preserving, and enhancing the U.S.National Park System.
- NIRS - Assist citizens with issues relating to nuclear power and radioactive waste.
- Worldwatch Institute - Monitors global environmental trends and is dedicated to fostering a sustainable society