| Organization | Address | State / Province | |
|---|---|---|---|
| Hawk Mountain Sanctuary | PA Map It | PA | |
| Heal the Bay | CA Map It | CA | |
| Heartwood | IN Map It | IN | |
| Hells Canyon Preservation Council | OR Map It | OR | |
| Hempen Goods | WI Map It | WI | |
| Herpetologists' League | KS Map It | KS | |
| Hoosier Environmental Council | IN Map It | IN | |
| Howling for Wolves | MN Map It | MN | |
| Humane Action Pittsburgh | PA Map It | PA | |
| Humane Veterinary Medical Alliance | CA Map It | CA | |
| Humane World Action Fund | DC Map It | DC | |
| Humane World for Animals | DC Map It | DC | |
| Idaho Conservation League | ID Map It | ID | |
| Illinois Humane | IL Map It | IL | |
| In Defense of Animals | CA Map It | CA | |
| Indiana Forest Alliance | IN Map It | IN | |
| International Bird Rescue Research Center | CA Map It | CA | |
| International Fund for Animal Welfare | DC Map It | DC | |
| International Primate Protection League | SC Map It | SC | |
| Iowa Wildlife Federation | IA Map It | IA | |
| IWLA - Allegheny County Chapter | PA Map It | PA | |
| Izaak Walton League, Rapid City, South Dakota Chapter | SD Map It | SD | |
| Jackson Hole Conservation Alliance | WY Map It | WY | |
| Jane Goodall Institute for Wildlife Research | VA Map It | VA | |
| John G. Shedd Aquarium | IL Map It | IL | |
| Organization | Address | State / Province |
