| Friends of Acadia | | Bar Harbor, ME | Local | 7 | 2024 | $977,599 |
| The Moosemoss Foundation | | Boston, MA | Local | 5 | 2024 | $176,787 |
| Onion Foundation | | Wayne, ME | Local | 5 | 2024 | $95,000 |
| Nathalie and James Andrews Foundation | | Charlottesvle, VA | National | 6 | 2024 | $90,000 |
| The Sibley Saltonstall Charitable Foundation | | Boston, MA | National | 7 | 2024 | $62,500 |
| Le Vine Family Foundation | | Bryn Mawr, PA | Local | 1 | 2024 | $20,000 |
| Spellissy Foundation | | Rockport, ME | Local | 3 | 2024 | $17,000 |
| Cleveland H Dodge Foundation Inc | | New York, NY | Local | 4 | 2024 | $14,000 |
| Cornolia Cogswell Rossi Foundation Inc | | Wilmington, DE | Local | 4 | 2024 | $13,000 |
| Baird Foundation | | Buffalo, NY | Local | 5 | 2024 | $11,000 |
| Florence V Burden Foundation | | New York, NY | Local | 7 | 2024 | $7,500 |
| Franz W Sichel Foundation | | Arlington, MA | National | 4 | 2024 | $6,000 |
| William E and Lucretia W Evans Foundation Inc | | Yarmouth, ME | National | 1 | 2024 | $6,000 |
| Janet Stone Jones Foundation | | Stamford, CT | National | 7 | 2024 | $3,500 |
| Laurence B Flood Foundation Inc | | Blue Hill, ME | Local | 5 | 2024 | $2,000 |
| National Park Foundation | | Washington, DC | National | 3 | 2023 | $1,515,374 |
| Earthwatch Institute Inc | | Newton, MA | National | 7 | 2023 | $665,048 |
| Ocean Reef Foundation Inc | | Key Largo, FL | Local | 4 | 2023 | $86,000 |
| Mount Desert Island Biological Laboratory | | Bar Harbor, ME | Local | 1 | 2023 | $20,382 |
| Good Hope Family Foundation | | Sewickley, PA | Local | 2 | 2023 | $10,000 |
| Maine Space Grant Consortium | | Augusta, ME | Local | 1 | 2023 | $7,943 |
| Malott Family Foundation | | Chicago, IL | Local | 1 | 2023 | $5,000 |
| Reny Charitable Fndtn Tr Ua 010193 Gr Robert H & Carolyn D Reny | | Newcastle, ME | Local | 1 | 2023 | $5,000 |
| Bank of New Hampshire Charitable Foundation | | Laconia, NH | Local | 1 | 2023 | $25 |
| Davis Conservation Foundation | | Yarmouth, ME | Local | 2 | 2022 | $24,250 |
| Chewonki Foundation Inc | | Wiscasset, ME | — | 5 | 2021 | $164,250 |
| Bangor Savings Bank Foundation | | Bangor, ME | Local | 1 | 2021 | $7,500 |
| The Robert P and Arlene R Kogod Family Foundation | | Arlington, VA | — | 3 | 2020 | $1,500 |
| United States Endowment Forforestry and Communities Inc | | Greenville, SC | National | 2 | 2019 | $104,103 |
| Roxanne Quimby Foundation Inc | | Portland, ME | Local | 2 | 2019 | $37,084 |
| Ganlee Fund C/O Wolf Maryles & Associates LLC | | | — | 2 | 2019 | $4,000 |
| Charles Sumner Bird Foundation | | Pittsburgh, PA | National | 1 | 2019 | $1,000 |
| Snow Family Foundation | | Marathon, FL | National | 1 | 2018 | $10,000 |
| Frank Moya Charitable Foundation | | | — | 1 | 2018 | $10,000 |
| The Edward and Marthann Samek Foundation | | Newtown Sq, PA | Local | 1 | 2018 | $1,000 |
| Ethel D Colket Foundation | | | — | 1 | 2017 | $2,500 |