The Forest Guild
- A land trust and stewardship organization in the American Southwest serving foresters, forest-dependent rural communities and businesses, policy makers, and public agencies with research and education on sustainable forestry.
- http://www.forestguild.org/

The Karst Conservancy
- Focused on preserving karst regions across the nation. Includes information about karst, photographs, and ways to help.
- http://www.karstconservancy.org/

Great Rivers Land Trust
- Seeks to promote, for the benefit of the general public, the preservation and improvement of natural resources principally in, but not limited to, the watershed of the Mississippi River.
- http://www.greatriverslandtrust.com/

Wildlife Land Trust
- Protects and preserves habitat for wildlife and provides sanctuary for wildlife by prohibiting commercial and recreational hunting and trapping. Affiliate of The Humane Society.
- http://www.wlt.org/

Habitat Trust
- USA land trust and conservation project. Manages donations of land and money.
- http://www.thehabitattrust.org/

Delta Land Trust
- Non-profit conservation and sustainable development organization based in Madison, Mississippi with operations throughout the Mississippi River Alluvial Valley portions of Arkansas, Louisiana and Mississippi.
- http://www.deltalandtrust.org/

Inland Northwest Land Trust
- Non-profit conservation organization dedicated to protecting habitat and green space by working with private landowners in eastern Washington and northern Idaho.
- http://www.inlandnwlandtrust.org/

Wilderness Land Trust
- Has acquired over 180 private inholdings in 35 National Wilderness Areas in Arizona, California, Colorado, Montana, New Mexico and Washington. Includes news and events, accomplishments, and ways to contribute and become involved.
- http://www.wildernesslandtrust.org/

Conservation Land Group
- Created with the pursuit of structuring and completing land conservation transactions between private landowners, non-profit organizations and public agencies.
- http://www.conserveland.com

Center for Ecological Management of Military Lands (CEMML)
- Supports the national defense mission by providing professional services and technical support to the Department of Defense in conservation, environmental protection, and natural and cultural resources management.
- http://www.cemml.colostate.edu/home.htm

National Association of Conservation Districts
- Provides news and information for and about the nation's 3000 local conservation districts.
- http://www.nacdnet.org/

Columbia Land Trust
- Works with landowners to conserve sensitive and critical lands in the Columbia River region. Provides project tours, news, factsheets, and membership information.
- http://www.columbialandtrust.org/

Equestrian Land Conservation Resource
- Non-profit organization founded to promote national awareness of the importance of land conservation for equestrian sports and activity. Guide, directors, council, calendar of events, library, equestrian partners, contact, and links.
- http://elcr.org

Northern Prairies Land Trust
- Provide landowners with information to protect lands that are significant for agriculture, ranching, fish and wildlife habitat, water resource enchancement and open space.
- http://www.northernprairies.org/

Southern Plains Land Trust
- Dedicated to preserving and restoring the short grass prairie ecosystem including key species such as the black-tailed prairie dog, swift fox, and others.
- http://www.southernplains.org/

Conservation Partners
- Working exclusively on land conservation projects; includes information about the company, projects, and contact information.
- http://www.conservationpartners.com/

Natural Land Institute
- Protecting and managing lands in Illinois and Wisconsin. Includes news, major acquisitions, volunteer opportunities, and membership information.
- http://www.naturalland.org/

The Trust for Public Land
- A U.S. national, nonprofit organization that conserves land for people to enjoy as parks, gardens, natural areas and open space. Information on the organization and current projects.
- http://www.tpl.org/

Land Trust Alliance
- Promotes voluntary land conservation and works with nonprofit land trusts by providing information, skills and resources land trusts need to conserve land for the benefit of communities and natural systems.
- http://www.lta.org/

American Land Conservancy
- Dedicated to the preservation of land and water as enduring public resources, to protect and enhance our nation's natural, ecological, historical, recreational and scenic heritage.
- http://www.alcnet.org/