| PHEASANTS FOREVER INC | $118,599,546 | C36 | inferred 0.70 | | Saint Paul, MN | 2024 |
| SAVE THE REDWOODS LEAGUE | $68,106,119 | C36 | published | | San Francisco, CA | 2024 |
| INTERNATIONAL CENTRE FOR RESEARCH IN AGROFORESTRY | $45,412,924 | C36 | published | science: research education | Alexandria, VA | 2024 |
| AMERICAN FORESTS | $35,611,433 | C36 | published | girls boys: boy scouts | Washington, DC | 2024 |
| ALABAMA FOREST RESOURCES CENTER INC | $27,042,313 | C36 | inferred 0.60 | | Mobile, AL | 2024 |
| AMERICAN FOREST FOUNDATION | $20,267,955 | C36 | published | launch: launch | Washington, DC | 2024 |
| MAX MCGRAW WILDLIFE FOUNDATION | $13,861,898 | C36 | inferred 0.50 | | Dundee, IL | 2024 |
| SUSTAINABLE FORESTRY INITIATIVE INC | $13,540,166 | C36 | published | launch: launch | Washington, DC | 2024 |
| SOCIETY FOR THE PROTECTION OF NEW HAMPSHIRE FORESTS | $13,274,033 | C36 | published | girls boys: girl scouts | Concord, NH | 2024 |
| BEAR HILL CONSERVANCY TR | $12,554,637 | C36 | inferred 0.60 | | Lyme, NH | 2024 |
| PACIFIC ENVIRONMENT AND RESOURCES CENTER | $10,981,159 | C36 | published | | San Francisco, CA | 2024 |
| MONGABAYORG CORPORATION | $10,032,953 | C36 | published | launch: launch | Menlo Park, CA | 2024 |
| TREES FOR THE FUTURE INC | $9,902,681 | C36 | published | | Silver Spring, MD | 2025 |
| TREE TRUST | $9,482,057 | C36 | inferred 0.70 | | Saint Paul, MN | 2024 |
| RAINFOREST ACTION NETWORK | $9,157,665 | C36 | published | | San Francisco, CA | 2024 |
| NEW ENGLAND FORESTRY FOUNDATION INC | $9,080,428 | C36 | published | | Littleton, MA | 2024 |
| THE HAMER FOUNDATION | $8,880,693 | C36 | inferred 0.50 | | State College, PA | 2024 |
| STAND | $8,097,833 | C36 | published | | San Francisco, CA | 2024 |
| KENTUCKY NATURAL LANDS TRUST INC | $8,089,123 | C36 | published | | Berea, KY | 2024 |
| RAINFOREST FOUNDATION INC | $7,797,512 | C36 | published | | Brooklyn, NY | 2024 |
| CTREES | $7,547,057 | C36 | published | | Pasadena, CA | 2025 |
| BHUTAN TRUST FUND FOR ENVIROMENTAL CONSERVATION | $7,417,040 | C36 | inferred 0.80 | shelter: animal | Bhutan | 2024 |
| ISAAC W BERNHEIM FOUNDATION INC | $7,161,897 | C36 | published | science: research education | Clermont, KY | 2024 |
| NATIONAL ASSOCIATION OF STATE FORESTERS | $6,742,818 | C36 | inferred 0.70 | | Washington, DC | 2024 |
| YAYASAN KEANEKARAGAMAN HAYATI INDONESIA | $6,464,465 | C36 | published | | Indonesia | 2024 |
| FONTENELLE FOREST | $6,435,485 | C36 | inferred 0.60 | science: research education | Bellevue, NE | 2025 |
| APPALACHIAN WILDLIFE FOUNDATION | $6,268,621 | C36 | published | | Corbin, KY | 2024 |
| PLANT-FOR-THE-PLANET US | $6,110,444 | C36 | published | | Santa Fe Springs, CA | 2024 |
| FOREST TRENDS ASSOCIATION | $6,019,529 | C36 | published | science: research education | Washington, DC | 2025 |
| SANTA MONICA MOUNTAINS FUND | $5,977,017 | C36 | inferred 0.60 | women: issues | Westlake Vlg, CA | 2025 |
| STEWARDSHIP WEST | $5,655,675 | C36 | published | | Arnold, CA | 2024 |
| PACIFIC CREST TRAIL ASSOCIATION | $5,632,708 | C36 | inferred 0.85 | girls boys: boy scouts | Sacramento, CA | 2025 |
| MOUNT DESERT LAND AND GARDEN PRESERVE | $5,316,664 | C36 | inferred 0.85 | | Seal Harbor, ME | 2025 |
| GREEN FORESTS WORK INC | $4,675,220 | C36 | published | | Lexington, KY | 2024 |
| GLOBAL FOREST GENERATION INC | $4,622,234 | C36 | published | | Arlington, VA | 2024 |
| PARKS CALIFORNIA | $4,359,807 | C36 | published | | Sacramento, CA | 2025 |
| FRED M VAN ECK FOREST FOUNDATION FOR PURDUE UNIVERSITY | $4,106,280 | C36 | published | science: research education | San Francisco, CA | 2024 |
| GREEN MOUNTAIN CLUB INC | $4,080,168 | C36 | inferred 0.50 | | Waterbury Ctr, VT | 2024 |
| HENRYS FORK FOUNDATION INC | $3,643,372 | C36 | inferred 0.60 | science: research education | Ashton, ID | 2024 |
| CLEARWATER-POTLATCH TIMBER PROTECTIVE ASSOCIATION INC | $3,452,488 | C36 | published | | Orofino, ID | 2024 |
| OUTSTANDING RENEWAL ENTERPRISES INC | $3,411,017 | C36 | inferred 0.50 | | New York, NY | 2025 |
| THOMAS IRVINE DODGE FOUNDATION | $3,384,108 | C36 | inferred 0.50 | science: research education | W Saint Paul, MN | 2024 |
| IDAHO CONSERVATION LEAGUE INC | $3,356,365 | C36 | inferred 0.85 | | Boise, ID | 2024 |
| US WORKING GROUP INC | $2,935,122 | C36 | published | | Atlanta, GA | 2024 |
| WESTERN RIVERS FORESTRY | $2,706,686 | C36 | inferred 0.60 | | Portland, OR | 2024 |
| GENESIS PROJECT | $2,702,655 | C36 | published | abuse: child | Jones, OK | 2024 |
| OUR CITY FOREST | $2,636,712 | C36 | published | | San Jose, CA | 2024 |
| SACRAMENTO TREE FOUNDATION INCORPORATED | $2,629,416 | C36 | published | | Sacramento, CA | 2024 |
| HUDSON TACONIC LANDS INC | $2,492,148 | C36 | published | | Averill Park, NY | 2024 |
| ALABAMA FORESTRY FOUNDATION | $2,471,995 | C36 | published | | Montgomery, AL | 2024 |
| N C FORESTRY ASSOCIATION | $2,429,261 | C36 | published | | Raleigh, NC | 2025 |
| BLACK ROCK FOREST CONSORTIUM INC | $2,420,059 | C36 | published | girls boys: boy scouts | Cornwall, NY | 2024 |
| MISSISSIPPI FORESTRY ASSOCIATION | $2,380,601 | C36 | inferred 0.60 | science: research education | Jackson, MS | 2025 |
| GEORGIA FORESTRY FOUNDATION INC | $2,366,294 | C36 | inferred 0.60 | | Forsyth, GA | 2024 |
| DELAWARE WILD LANDS INC 350 | $2,055,214 | C36 | inferred 0.70 | | Townsend, DE | 2024 |
| VP DATA COMMONS | $1,972,989 | C36 | published | science: research education | Conifer, CO | 2025 |
| SANCTUARY FOREST INC | $1,967,792 | C36 | published | | Whitethorn, CA | 2024 |
| GREEN FOOTHILLS FOUNDATION | $1,948,893 | C36 | inferred 0.70 | | Palo Alto, CA | 2025 |
| NORTH COUNTRY TRAIL ASSOCIATION INCORPORATED | $1,814,633 | C36 | inferred 0.70 | | Lowell, MI | 2025 |
| PENNSYLVANIA PARKS AND FORESTS FOUNDATION | $1,770,133 | C36 | published | launch: launch | Camp Hill, PA | 2025 |
| COOK INLET AQUACULTURE ASSOC | $1,765,413 | C36 | inferred 0.60 | | Kenai, AK | 2024 |
| TFT | $1,747,666 | C36 | published | | Seattle, WA | 2024 |
| URBAN FOREST CARBON REGISTRY | $1,695,590 | C36 | published | | Seattle, WA | 2025 |
| WORLD FORESTRY CENTER INC | $1,695,019 | C36 | published | | Portland, OR | 2025 |
| TUSCANY RESEARCH INSTITUTE | $1,624,358 | C36 | inferred 0.50 | | Las Vegas, NV | 2024 |
| FOREST HISTORY SOCIETY INC | $1,596,746 | C36 | published | | Durham, NC | 2024 |
| ROCKY MOUNTAIN FIELD INSTITUTE INC | $1,574,410 | C36 | inferred 0.60 | | Colorado Spgs, CO | 2025 |
| HAWAII WILDFIRE MANAGEMENT ORGANIZATION | $1,561,187 | C36 | published | science: research education | Kamuela, HI | 2024 |
| FRIENDS OF THE BRIDGER-TETON | $1,559,566 | C36 | published | | Jackson, WY | 2024 |
| TRUST TO CONSERVE NORTHEAST FOREST LANDS | $1,558,289 | C36 | inferred 0.45 | | Augusta, ME | 2025 |
| NEBRASKA ASSOCIATION OF RESOURCES DISTRICTS | $1,483,002 | C36 | inferred 0.50 | | Lincoln, NE | 2024 |
| WORKING LANDS TRUST INC | $1,463,005 | C36 | published | | Gold Hill, NC | 2024 |
| COUNCIL OF WESTERN STATE FORESTERS | $1,415,039 | C36 | published | | Denver, CO | 2024 |
| SANDBHREAGH WILDLANDS SANCTUARY AND TR | $1,403,169 | C36 | published | | Vershire, VT | 2024 |
| WILDLAND RESTORATION INTERNATIONAL INC | $1,394,365 | C36 | inferred 0.60 | | Duxbury, MA | 2017 |
| PINE TREE CONSERVATION SOCIETY INC | $1,348,337 | C36 | inferred 0.72 | | New York, NY | 2025 |
| FOREST RELEAF OF MISSOURI | $1,319,095 | C36 | published | science: research education | Saint Louis, MO | 2024 |
| ROBERT N DOWNS MEMORIAL CONSERVANCY INC | $1,305,731 | C36 | inferred 0.85 | | Wilmington, DE | 2024 |
| TREES FOR TOMORROW INC | $1,284,321 | C36 | published | | Eagle River, WI | 2025 |
| THE HENRY FOUNDATION INC | $1,260,133 | C36 | inferred 0.40 | | Jacksonville, IL | 2025 |
| SOUTHERN CONSERVATION TRUST INC | $1,259,098 | C36 | inferred 0.50 | girls boys: girl scouts | Fayetteville, GA | 2025 |
| NEW JERSEY TREE FOUNDATION INC | $1,258,428 | C36 | published | men: issues | Medford, NJ | 2024 |
| INTERTRIBAL BISON INC | $1,227,967 | C36 | inferred 0.50 | | Rapid City, SD | 2009 |
| CORNWALL CONSERVATION TRUST INC | $1,182,407 | C36 | inferred 0.50 | science: research education | West Cornwall, CT | 2025 |
| ECOFORESTERS INC | $1,171,306 | C36 | published | | Asheville, NC | 2024 |
| WAIKOLOA DRY FOREST INITIATIVE INC | $1,162,284 | C36 | published | science: research education | Waikoloa, HI | 2025 |
| SISKIYOU MOUNTAIN CLUB | $1,157,620 | C36 | published | | Talent, OR | 2024 |
| NORTHERN ROCKIES CONSERVATION COOPERATIVE | $1,150,616 | C36 | inferred 0.60 | | Jackson, WY | 2024 |
| DOVETAIL PARTNERS INC | $1,124,090 | C36 | published | | Minneapolis, MN | 2025 |
| FORESTRY ASSOCIATION OF SOUTH CAROLINA | $1,081,697 | C36 | published | | Columbia, SC | 2024 |
| THE WALTHOUR-MOSS FOUNDATION | $1,020,968 | C36 | inferred 0.75 | | Southern Pnes, NC | 2024 |
| CORPORACION PARA LA CONSERVACION ETNOECOLOGICA CRIOLLA INC | $996,096 | C36 | published | | Caguas, PR | 2024 |
| DEERING ESTATE FOUNDATION INC | $978,000 | C36 | inferred 0.80 | science: research education | Palmetto Bay, FL | 2024 |
| THE LANDS COUNCIL | $969,376 | C36 | published | | Spokane, WA | 2024 |
| ORGANIC SEED ALLIANCE | $955,121 | C36 | inferred 0.50 | | Port Townsend, WA | 2024 |
| SOUTHERN GROUP OF FORESTERS INC | $945,595 | C36 | published | | Washington, DC | 2024 |
| NORTHEAST-MIDWEST STATE FORESTERS ALLIANCE | $936,864 | C36 | published | | Washington, DC | 2024 |
| FRIENDS OF LAPHAM PEAK UNIT | $928,817 | C36 | published | | Delafield, WI | 2024 |
| CASCADE FOREST CONSERVANCY | $921,832 | C36 | published | | Vancouver, WA | 2024 |
| NATIONAL ASSOCIATION OF WHEAT GROWERS FOUNDATION INC | $892,874 | C36 | inferred 0.50 | science: research education | Washington, DC | 2024 |