| Organization | Address | State / Province | |
|---|---|---|---|
| Church & Society, The United Methodist Church | DC Map It | DC | |
| Citizens United for Animals | WI Map It | WI | |
| Coalition on the Environment and Jewish Life | NY Map It | NY | |
| Coast Range Association | OR Map It | OR | |
| Coastal Plains Institute | FL Map It | FL | |
| Connecticut Association of Conservation and Inland Wetlands Commissions | CT Map It | CT | |
| Conservancy of Southwest Florida | FL Map It | FL | |
| Conservation Alliance of the Great Plains | NE Map It | NE | |
| Conservation Council for Hawai'i | HI Map It | HI | |
| Conservation Fisheries | TN Map It | TN | |
| Conservation Law Foundation | ME Map It | ME | |
| Conservation Northwest | WA Map It | WA | |
| Cornell Greens | NY Map It | NY | |
| Cosley Zoo | IL Map It | IL | |
| Cosmic Sister | MA Map It | MA | |
| Cougar Rewilding Foundation | WV Map It | WV | |
| Creation Justice Ministries | DC Map It | DC | |
| Creature Conserve, Inc. | RI Map It | RI | |
| CU Wildlife Club | CO Map It | CO | |
| Darby Creek Valley Association | PA Map It | PA | |
| DC Natives | DC Map It | DC | |
| Defenders of Wildlife | DC Map It | DC | |
| Delaware Center for Inland Bays | DE Map It | DE | |
| Delaware Ecumenical Council | DE Map It | DE | |
| Delaware Riverkeeper Network | PA Map It | PA | |
| Organization | Address | State / Province |
