Tennessee Citizens for Wilderness Planning
- Volunteer organization devoted to the protection and preservation of the natural environment, particularly the natural wonders of the Cumberland Plateau region.
- http://tcwp.org/

Sierra Club - Tennessee Chapter
- Chapter newsletters and links to local groups around the state.
- http://tennessee.sierraclub.org/

The Land Trust for Tennessee
- Works to preserve the unique character of Tennessee's natural and historic landscapes and sites by means of conservation easements.
- http://www.landtrusttn.org/

Nature Conservancy of Tennessee
- Preserving the plants, animals, and natural communities that represent the diversity of life on Earth by protecting the lands and waters they need to survive. Preser
- http://nature.org/wherewework/northamerica/states/tennessee/

Southern Alliance for Clean Energy
- Coalition of environmental and citizen organizations promoting green energy in the TVA region. Includes information about a variety of energy and environment issues in the state and region.
- http://www.cleanenergy.org/

SOCM: Save Our Cumberland Mountains
- A rural Tennessee citizen's organization working for social, environmental, and economic justice through grassroots organizing. Interests include strip mining, economic issues, toxics, timbering, and state tax reform.
- http://www.socm.org/

Tennessee Conservation League
- Advocates for the conservation and sustainable use of the state's natural resources, including forests, waters, air, wildlife, and soil. Information on current issues and activities, with particular focus on wildlife and sportsmen's concerns.
- http://www.conservetn.com/

Tennessee Environmental Council
- Consortium of Tennessee environmental organizations. Site includes information and opinion regarding state environment issues and links to web sites of TEC member groups.
- http://www.tectn.org/