| 1000 Friends of Florida | FL |
| A LION'S HEART | Pays de la Loire |
| A World Institute for Sustainable Humanity | WA |
| A-Team for Wildlife | CA |
| Acterra | CA |
| Action for Animals | WA |
| Advocates for the West | ID |
| African People & Wildlife | NJ |
| Alabama Environmental Council | AL |
| Alaska Wilderness League | DC |
| Alaska Wildlife Alliance | AK |
| Allegheny-Blue Ridge Alliance | VA |
| Alliance for the Great Lakes | IL |
| Alliance for the Wild Rockies | MT |
| American Association of Zoo Veterinarians | FL |
| American Bird Conservancy | DC |
| American Cetacean Society | CA |
| American Conservation Film Festival | WV |
| American Hiking Society | MD |
| American Humane Association | DC |
| American Ornithologists' Union | VA |
| American Public Garden Association | PA |
| American Reef Coalition | HI |
| American Rivers | DC |
| American Society of Mammalogists | KS |
| Anacostia Watershed Society | MD |
| Andropogon Associates, Inc. | PA |
| Animal and Society Institute | MI |
| Animal Defenders International | CA |
| Animal Welfare Institute | DC |
| Animal Wonders Kansas City | MO |
| Apex Protection Project | CA |
| Appalachia Science in the Public Interest | KY |
| Appalachian Mountain Club | MA |
| Arkansas Renewable Resources Council | TX |
| Arkansas Wildlife Federation | AR |
| Association of Zoos and Aquariums | MD |
| Atlanta Audubon Society | GA |
| Audubon | DC |
| Audubon Society of Central Maryland | MD |
| Audubon Society of New Hampshire | NH |
| Audubon Society of Portland | OR |
| Audubon Society of Rhode Island | RI |
| Audubon Society of the District of Columbia | DC |
| Audubon Texas | TX |
| Audubon Vermont | VT |
| Augusta Bird Club | VA |
| Bat Conservation International | TX |
| Bay Area Action | CA |
| Bay Area Action | CA |
| Bear Trust International | MT |
| Berkshire Environmental Action Team (BEAT) | MA |
| BirdNote | WA |
| Black Bear Conservation Coalition | LA |
| Born Free | MD |
| Boulder Rights of Nature | CO |
| Bowling Green-Warren County Humane Society | KY |
| Buckeye Environmental Network | OH |
| Bucks County Audubon Society | PA |
| Buffalo Field Campaign | MT |
| Buffalo Outdoor Center | AR |
| Butte Environmental Council | CA |
| Butterfly Farms.org | CA |
| California Native Plant Society | CA |
| California Trout | CA |
| California Wilderness Coalition | CA |
| Cambridge Woodfire Pottery | WI |
| Canada Goose Project | NY |
| Cascadia Forest Defenders | OR |
| Cascadia Wildlands | OR |
| Center for Biological Diversity | DC |
| Center for Wildlife Information | MT |
| Cetacean Society International | CT |
| Chattooga Conservancy | GA |
| Chewonki Foundation | ME |
| Church & Society, The United Methodist Church | DC |
| Citizens United for Animals | WI |
| Coalition on the Environment and Jewish Life | NY |
| Coast Range Association | OR |
| Coastal Plains Institute | FL |
| Connecticut Association of Conservation and Inland Wetlands Commissions | CT |
| Conservancy of Southwest Florida | FL |
| Conservation Alliance of the Great Plains | NE |
| Conservation Council for Hawai'i | HI |
| Conservation Fisheries | TN |
| Conservation Law Foundation | ME |
| Conservation Northwest | WA |
| Cornell Greens | NY |
| Cosley Zoo | IL |
| Cosmic Sister | MA |
| Cougar Rewilding Foundation | WV |
| Creation Justice Ministries | DC |
| Creature Conserve, Inc. | RI |
| CU Wildlife Club | CO |
| Darby Creek Valley Association | PA |
| DC Natives | DC |
| Defenders of Wildlife | DC |
| Delaware Center for Inland Bays | DE |
| Delaware Ecumenical Council | DE |
| Delaware Riverkeeper Network | PA |
