New England Light Pollution Advisory Group
- Volunteer organization whose purpose is to educate the public on the hazards of outdoor night lighting, through meetings across the region, information at the website and online publications.
- http://www.cfa.harvard.edu/nelpag/nelpag.html

The New England Botanical Club
- Nonprofit organization founded in 1895 that promotes the study of plants of North America, especially the flora of New England and adjacent areas.
- http://www.rhodora.org/

Southern New England Chapter of American Fisheries Society
- Provides support for the American Fisheries Society by improving the conservation and sustainability of fishery resources and aquatic ecosystems, advancing fisheries and aquatic science and promoting the development of fisheries professionals.
- http://www.snec-fisheries.org/

Southern New England Forest Consortium, Inc.
- Nonprofit group of natural resource professionals, private enterprise and citizens from Massachusetts, Connecticut and Rhode Island which works to conserve and promote the productive use of the region's forests and natural resources.
- http://www.snefci.org/

Toxics Action Center
- Organization which assists neighborhood groups fight pollution in their communities. Information on conferences, pollution prevention, dangerous facilities and publications. Also provides contact information for offices in Maine, Massachusetts and Connect
- http://www.toxicsaction.org/

New England Wild Flower Society
- Plant conservation organization with chapters throughout New England.
- http://www.newfs.org/

Green For New England
- Large-scale coalition of environmental non-profits based in New England, addressing air, water and natural resource issues.
- http://www.greenfornewengland.org/

Environmental Protection Agency: Region 1
- Programs, projects, grants, events, regional library, watershed information, and New England tribal information.
- http://www.epa.gov/region01/