| African Wildlife Foundation Inc | Washington | B | $37.34M |
| Alliance for Stray Animals and People | Washington | C | $124K |
| America's Wildlife Association for | Washington | A | $682K |
| American Humane Association | Washington | A | $36.57M |
| American Veterinary Medical Law | Washington | C | $18K |
| Animal & Vegan Advocacy International Inc | Washington | C | $2.55M |
| Animal Rescue Corps Inc | Washington | A | $1.32M |
| Animal Welfare Institute | Washington | C | $6.17M |
| Beowulf House | Washington | F | $2,927 |
| Bonobo Conservation Initiative | Washington | C | $415K |
| Center for Conservation Peacebuilding | Washington | A | $120K |
| City Dogs Rescue Inc | Washington | B | $1.20M |
| Conservation Nation | Washington | B | $989K |
| Conservation X Labs Inc | Washington | C | $9.09M |
| DC Voters for Animals Education Fund Inc | Washington | C | $169K |
| Defenders of Wildlife | Washington | C | $48.55M |
| East Coast Corgi Rescue | Washington | C | $36K |
| Elephantvoices | Washington | D | $381K |
| Endangered Species Coalition | Washington | A | $891K |
| Frankfurt Zoological Society - US Inc | Washington | B | $13.48M |
| Friends of Cswct | Washington | C | $153K |
| Green America | Washington | C | $5.23M |
| Human Animal Bond Research Foundation | Washington | C | $1.60M |
| Humane World for Animals International | Washington | C | $35.14M |
| Jane Goodall Institute for Wildlife | Washington | A | $30.55M |
| Laila's Legacy Animal Rescue Inc | Washington | D | $191K |
| Lemur Conservation Network | Washington | C | $43K |
| Life Long Paws Foundation | Washington | D | $224K |
| National Fish and Wildlife Foundation | Washington | A | $584.23M |
| National Turkey Federation Foundation | Washington | C | $214K |
| National Wildlife Refuge | Washington | B | $1.19M |
| Nonhuman Rights Project Inc | Washington | C | $2.14M |
| Resolve Inc | Washington | B | $9.12M |
| Tail Wags & Book Bags | Washington | B | $106K |
| The Humane Society Wildlife Land Trust | Washington | F | $1.09M |
| The Whale Sanctuary Project | Washington | C | $2.27M |
| The White Coat Waste Project Inc | Washington | B | $5.94M |
| The Wilderness Project Foundation | Washington | A | $5.75M |
| Theodore Roosevelt Conservation | Washington | C | $11.55M |
| Washington Humane Society | Washington | C | $22.57M |
| Washington Metro Chapter of | Washington | F | −$12K |
| Wildlife Guardians | Washington | C | $2.46M |
Charity Clarity