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Narragansett Bay Estuary Program
Narragansett Bay Estuary Program’s mission is to protect and preserve Narragansett Bay and its watershed through partnerships that conserve and restore natural resources, enhance water quality and promote community involvement.
www.nbep.org

National Audubon Society
The mission of the National Audubon Society is to conserve and restore natural ecosystems, focusing on birds, other wildlife, and their habitats for the benefit of humanity and the earth's biological diversity.
www.audubon.org

National Climate Ethics Campaign
The campaign will assist organizations, sectors and communities nationwide to continually insist that when making decisions about energy use, emission reductions, or climate preparedness and adaptation our moral obligations must hold equal or greater weight to economic or national self-interest.
www.climateethicscampaign.org

National Farmers Union
National Farmers Union has been working since 1902 to protect and enhance the economic well-being and quality of life for family farmers, ranchers and rural communities through advocating grassroots-driven policy positions adopted by its membership.
www.nfu.org

National Parks Conservation Association
The mission of the Association is to protect and enhance America’s National Parks for present and future generations.
www.npca.org

National Sustainable Agriculture Coalition
The National Sustainable Agriculture Coalition is an alliance of grassroots organizations that advocates for federal policy reform to advance the sustainability of agriculture, food systems, natural resources and rural communities.
www.sustainableagriculture.net

National Wildlife Federation
National Wildlife Federation gives voice to the wildlife conservation values that are part of our country’s heritage.
www.nwf.org

Natural Lands Trust
Natural Lands Trust protects the forests, fields, wetlands and streams that are essential to the sustainability and quality of life in eastern Pennsylvania and southern New Jersey.
www.natlands.org

Natural Resources Council of Maine
Natural Resources Council of Maine is a nonprofit membership organization protecting, restoring and conserving Maine’s environment, now and for future generations.
www.nrcm.org

Natural Resources Defense Council
Natural Resources Defense Council uses law, science and the support of 1.3 million members and online activists to protect the planet’s wildlife and wild places and to ensure a safe and healthy environment for all living things.
www.nrdc.org

Nature Canada
Nature Canada mission is to protect and conserve wildlife and habitats in Canada by engaging people and advocating on behalf of nature.
www.naturecanada.ca

The Nature Conservancy
The mission of The Nature Conservancy is to preserve the plants, animals and natural communities that represent the diversity of life on Earth by protecting the lands and waters they need to survive.
www.nature.org

Nature Consortium
Nature Consortium is a grassroots, community-based organization whose mission is to connect people, arts and nature.
www.naturec.org

Neighbors for Clean Air
Neighbors for Clean Air is a Portland-wide coalition seeking to make public health—with special consideration for children’s health—a priority in Oregon’s air quality standards and programs for toxic emissions.
www.whatsinourair.org

Network for Business Innovation and Sustainability
Network for Business Innovation and Sustainability provides businesses and professionals who are serious about profitable sustainability with the connections, skills, tools, programs and resources that are vital for success in the green economy.
www.nbis.org

Network for Oil & Gas Accountability and Protection
Network for Oil & Gas Accountability and Protection is organized to educate, empower and advocate for the citizens of Ohio who are facing threats to health, safety and property rights posed by oil and gas development.
www.neogap.org

Nevada Wilderness Project
The Nevada Wilderness Project is a catalyst for wildlife habitat conservation, wilderness preservation and smart development of renewable energy.
www.wildnevada.org

New Energy Economy
New Energy Economy strives to create economic opportunity in New Mexico with less carbon pollution and more clean energy.
www.newenergyeconomy.org

New Generation Energy
New Generation Energy’s mission is to make America’s communities healthier and more sustainable through the development of renewable energy and energy efficiency projects.
www.newgenerationenergy.org

New Hampshire Rivers Council
The New Hampshire Rivers Council is committed to the conservation and ecologically sound management of New Hampshire’s rivers, watersheds and related natural resources.
www.nhrivers.org

New Haven Bioregional Group
The New Haven Bioregional Group sponsors walks, films, canoe trips, potlucks and other events to help residents of the Quinnipiac Bioregion connect with their natural and built environment, and to build community and local resilience.
www.newhavenbioregionalgroup.org

New Mexico Acequia Association
The mission of the New Mexico Acequia Association is to sustain our way of life, protect water as a community resource, and strengthen the agricultural traditions of our families and communities.
www.lasacequias.org

New Mexico Environmental Law Center
New Mexico Environmental Law Center is a nonprofit, public interest law firm that provides free and low-cost legal services on environmental matters throughout New Mexico.
www.nmenvirolaw.org

New Mexico Wilderness Alliance
The New Mexico Wilderness Alliance is a nonprofit, grassroots, environmental organization dedicated to the protection, restoration and continued enjoyment of New Mexico’s wildlands and Wilderness areas.
www.nmwild.org

New Orleans Food & Farm Network
New Orleans Food & Farm Network is a food justice organization that sees food security as a basic human right and our primary goal is to ensure that everyone can live with enough food, regardless of economic constraints or social inequalities.
www.noffn.org

New Urban Farmers
The New Urban Farmers is a nonprofit organization that has set out to preserve and restore our environment by creating sustainable agricultural systems in the city.
www.newurbanfarmers.com

New Yorkers Against Fracking
New Yorkers Against Fracking is a coalition of diverse organizations that support a fracking ban.
www.nyagainstfracking.org

No Frack Ohio
The No Frack Ohio Coalition is composed of member organizations and individuals who signed on to a Statewide Moratorium letter in the Spring of 2011.  Since the original sign-on campaign, these groups and individuals have worked across Ohio on outreach to elected officials at all levels of government, landowner education and mobilizing members for activism.
www.nofrackohio.com

Noquemanon Trail Network
The Network’s mission is to develop and maintain an interconnected, year round, non-motorized land and water trail network in the central Upper Peninsula of Michigan.
www.noquetrails.org

North Cascades Conservation Council
The mission of the Council is to protect and preserve the North Cascades’ scenic, scientific, recreational, educational and wilderness values.
www.northcascades.org

North Cascades Institute
The Institute’s mission is to conserve and restore Northwest environments through education.
www.ncascades.org

North Sound Baykeeper
North Sound Baykeeper is charged with protecting and restoring the marine and nearshore habitats of the northern Puget Sound region.
www.northsoundbaykeeper.blogspot.com

North Union Farmers Market
North Union Farmers Market champions the local foods of Northeast Ohio and promotes their environmental, economic and health benefits by connecting certified producers with consumers through a network of markets.
www.northunionfarmersmarket.org

The Northcoast Environmental Center 
The Northcoast Environmental Center's mission is to promote understanding of the relations between people and the biosphere and to conserve, protect, and celebrate terrestrial, aquatic, and marine ecosystems of northern California and southern Oregon.
www.yournec.org

Northeast Ohio Food Web
The Northeast Ohio Food Web is the information clearing house and virtual think tank for the Northeast Ohio Local Food Assessment and Plan, which has assessed the state of Northeast Ohio’s food system with specific recommendations on how to significantly “re-localize” over coming years.
www.neofoodweb.org

Northeast Sustainable Agriculture Working Group
The mission of the Northeast Sustainable Agriculture Working Group is to build a more sustainable, healthy and equitable food system for the Northeast region.
www.nefood.org

Northern Virginia Conservation Trust
Northern Virginia Conservation Trust preserves open space by acquiring land and conservation easements, providing stewardship of protected lands, and building public support for conservation.
www.nvct.org

Northwest Center for Alternatives to Pesticides
Northwest Center for Alternatives to Pesticides works to protect community and environmental health and inspire the use of ecologically sound solutions to reduce the use of pesticides.
www.pesticide.org

Northwest Energy Coalition
The Coalition promotes development of renewable energy and energy conservation, consumer protection, low-income energy assistance, and fish and wildlife restoration on the Columbia and Snake rivers.
www.nwenergy.org

Northwest Energy Efficiency Alliance
Northwest Energy Efficiency Alliance is a nonprofit organization working to maximize energy efficiency to meet our future energy needs.
www.neea.org

Nourishing the Planet
The Nourishing the Planet project assesses the state of agricultural innovations—from cropping methods to irrigation technology to agricultural policy—with an emphasis on sustainability, diversity, and ecosystem health, as well as productivity.
www.NourishingthePlanet.org

Nuclear Energy Information Service
Nuclear Energy Information Service is a nonprofit organization committed to ending nuclear power.
www.neis.org

Nuclear Information and Resource Service
Nuclear Information and Resource Service is the information and networking center for citizens and environmental organizations concerned about nuclear power, radioactive waste, radiation, and sustainable energy issues.
www.nirs.org

Nuclear Watch
Nukewatch is a Wisconsin-based environmental and peace action group, dedicated to the abolition of nuclear power, weapons and continued radioactive waste production.
www.nukewatchinfo.org

Ocean Conservancy 
Ocean Conservancy works to protect our ocean and improve our lives.
www.oceanconservancy.org

Oceana North America
Oceana seeks to make our oceans as rich, healthy and abundant as they once were.
www.na.oceana.org

Occupy Monsanto
International action against genetic biohazards
www.occupy-monsanto.com

Ogeechee Riverkeeper
The Riverkeeper’s mission is to protect, preserve and improve the water quality of the Ogeechee River basin.
www.ogeecheeriverkeeper.org

Ohio Citizen Action
Ohio Citizen Action is 80,000 members who have joined together to prevent pollution. Since 1975, the nonprofit and nonpartisan organization has pioneered winning campaigns across Ohio to protect public health and the environment.
www.ohiocitizen.org

Ohio Ecological Food & Farm Association
The Ohio Ecological Food & Farm Association is a grassroots coalition of farmers, backyard gardeners, consumers, retailers, educators, researchers and others who share a desire to build a healthy food system that brings prosperity to family farmers, helps preserve farmland, offers food security for all Ohioans and creates economic opportunities for our rural communities.
www.oeffa.org

Ohio Environmental Council
The mission of the Ohio Environmental Council is to secure healthy air, land and water for all who call Ohio home.
www.theoec.org

Ohio Environmental Law Center
The Ohio Environmental Law Center supports environmental advocacy and legal action, provides citizens with valuable tools and guidance through the legal system, and educates tomorrow’s environmental law professionals.
www.ohioenvirolawcenter.wordpress.com

Ohio Fracktion
Ohio Fracktion is a network of individuals interested in supporting community battles against fracking in Ohio.
www. ohiofracktion.wordpress.com

Ohio Interfaith Power and Light
An affiliate of The Regeneration Project’s national Interfaith Power and Light campaign. Their mission is to voice a religious response to climate change and to promote energy conservation, energy efficiency, and renewable energy. They focus on tangible results in religious communities — putting faith to action.
www.ohipl.org

Ohio Stormwater Association
The Ohio Stormwater Association is a group of public and private citizens dedicated to advancing the management of stormwater and related natural resources through education, leadership, watershed-based coordination and technical assistance in Ohio.
www.ohioswa.com

Ohio Watershed Network
Ohio Watershed Network provides information to community members and natural resources professionals who want to protect the resources in their watershed. The website focuses on community-based watershed management
www.ohiowatersheds.osu.edu

Oil Change International
Oil Change International campaigns to expose the true costs of fossil fuels and facilitate the coming transition towards clean energy.
www.priceofoil.org

Oklahomans for New Transportation Alternatives Coalition
Oklahomans for New Transportation Alternatives Coalition is a not‑for-profit public interest organization whose mission is to ensure Oklahoma’s rail transit future for the citizens of Oklahoma.
www.ontracok.org

OMB Watch
OMB Watch exists to increase government transparency and accountability; to ensure sound, equitable regulatory and budgetary processes and policies; and to protect and promote active citizen participation in our democracy.
www.ombwatch.org

Open Space Council – St. Louis Region
The Open Space Council for the St. Louis Region is a nonprofit organization committed to conserving, protecting and sustaining land and water resources throughout the area, and is dedicated to ensuring their responsible and ethical use.
www.openspacestl.org

Openlands
Openlands protects the natural and open spaces of northeastern Illinois and surrounding region to ensure cleaner air and water, protect natural habitats and wildlife, and help balance and enrich our lives.
www.openlands.org

Oregon Environmental Council
The Oregon Environmental Council advances innovative, collaborative solutions to Oregon’s environmental challenges for today and future generations.
www.oeconline.org

Oregon League of Conservation Voters
The Oregon League of Conservation Voters passes laws that protect our natural legacy, elects pro-environment candidates, and holds all of our elected officials accountable.
www.olcv.org

Oregon Wild
Oregon Wild works to protect and restore Oregon’s wildlands, wildlife and waters as an enduring legacy for all Oregonians.
www.oregonwild.org

Orenda Land Trust
Orenda Wildlife Land Trust is a private nonprofit land trust working to preserve and protect open space for wildlife habitat on Cape Cod and throughout Massachusetts.
www.orendalandtrust.org

Organic Consumers Association
The Organic Consumers Association is an online and grassroots nonprofit 501(c)3 public interest organization campaigning for health, justice and sustainability.
www.organicconsumers.org

Organic Seed Growers and Trade Association
The Organic Seed Growers and Trade Association (OSGATA) develops, protects and promotes the organic seed trade and its growers, and assures that the organic community has access to excellent quality organic seed, free of contaminants and adapted to the diverse needs of local organic agriculture.
www.osgata.org

Ozaukee Washington Land Trust
The mission of the Ozaukee Washington Land Trust is to protect and preserve the natural areas, open spaces and rural character of Ozaukee and Washington Counties.
www.owlt.org