| 1 | Chesapeake Bay Foundation INC Annapolis | $61.4M | $36.2M | $129.3M |
| 2 | National Marine Sanctuary Foundation Silver Spring | $36.6M | $36.0M | $15.5M |
| 3 | Montgomery County Green Bank Corp. Rockville | $25.5M | $25.5M | $141.1M |
| 4 | Alliance for the Chesapeake Bay INC Annapolis | $16.1M | $16.0M | $10.6M |
| 5 | Trees for the Future INC Silver Spring | $15.6M | $15.6M | $10.0M |
| 6 | Chesapeake Conservancy INC Annapolis | $15.3M | $14.0M | $20.6M |
| 7 | Oceantic Network INC Owings Mills | $11.9M | $11.9M | $11.6M |
| 8 | Environmental Policy Innovation Center College Park | $10.8M | $10.8M | $4.6M |
| 9 | Nature Forward INC Chevy Chase | $8.6M | $4.5M | $15.1M |
| 10 | Solid Waste Association of North America INC Silver Spring | $7.6M | $5.7M | $3.4M |
| 11 | Wild Earth Allies INC Chevy Chase | $7.2M | $6.2M | $9.2M |
| 12 | Irvine Natural Science Center INC Owings Mills | $6.6M | $4.9M | $15.9M |
| 13 | Baltimore Tree Trust INC Baltimore | $6.1M | $5.8M | $3.3M |
| 14 | Maryland Coastal Bays Foundation INC Berlin | $5.8M | $5.8M | $1.6M |
| 15 | Izaak Walton League of America INC Gaithersburg | $5.7M | $3.2M | $12.7M |
| 16 | National Park Trust INC Rockville | $5.6M | $4.4M | $7.4M |
| 17 | Shorerivers INC Easton | $5.5M | $5.4M | $3.7M |
| 18 | Land Preservation Trust INC Cockeysville | $5.5M | $5.5M | $4.0M |
| 19 | Western Maryland Resource Conservation and Development Hagerstown | $4.6M | $4.6M | $1.6M |
| 20 | Chesapeake Climate Action Network Takoma Park | $4.2M | $4.0M | $3.4M |
| 21 | Center for Watershed Protection Fulton | $3.9M | $3.8M | $2.7M |
| 22 | Arundel Rivers Federation INC Edgewater | $3.8M | $3.5M | $2.6M |
| 23 | American Lumber Standard Committee Incorporated Frederick | $3.7M | $3.7M | $6.4M |
| 24 | Moonshot Missions INC Bethesda | $3.7M | $3.7M | $1.6M |
| 25 | Eastern Shore Land Conservancy INC Easton | $3.3M | $1.2M | $15.8M |
| 26 | Howard County Conservancy INC Woodstock | $3.2M | $2.4M | $7.5M |
| 27 | Cylburn Arboretum Friends INC Baltimore | $3.1M | $2.3M | $8.9M |
| 28 | Blue Water Baltimore Baltimore | $3.1M | $2.9M | $1.8M |
| 29 | Foundations of Success INC Bethesda | $3.1M | $3.1M | $2.8M |
| 30 | Potomac Conservancy INC Bethesda | $2.8M | $2.7M | $3.8M |
| 31 | Chesapeake Power Foundation INC Bethesda | $2.7M | $0 | $3.5M |
| 32 | National Council on Radiation Protection and Measurements Bethesda | $2.7M | $2.5M | $2.6M |
| 33 | Anacostia Watershed Society INC Bladensburg | $2.6M | $2.6M | $2.2M |
| 34 | Rock Creek Conservancy INC Bethesda | $2.6M | $2.5M | $2.6M |
| 35 | Chesapeake Research Consortium INC Edgewater | $2.4M | $2.4M | $780K |
| 36 | Adkins Arboretum Ltd Ridgely | $2.4M | $1.1M | $5.6M |
| 37 | Rachel Carson Council INC Bethesda | $2.4M | $2.4M | $5.3M |
| 38 | Alice Ferguson Foundation INC Accokeek | $2.2M | $1.7M | $10.9M |
| 39 | Cecil Land Trust Elkton | $2.1M | $2.1M | $1.5M |
| 40 | Friends of Patterson Park INC Baltimore | $2.1M | $2.1M | $3.4M |
| 41 | Echo Hill Outdoor School INC Worton | $2.1M | $2.0M | $3.5M |
| 42 | World Environment Center INC Bethesda | $2.0M | $2.0M | $593K |
| 43 | Upstream Alliance INC Annapolis | $2.0M | $2.0M | $3.4M |
| 44 | Voices for a Sustainable Future INC Takoma Park | $2.0M | $2.0M | $2.3M |
| 45 | Environmental Concern INC St. Michael | $1.8M | $1.8M | $1.7M |
| 46 | Chesapeake Audubon Society Easton | $1.7M | $1.5M | $9.3M |
| 47 | Maryland Forestry Boards Foundation INC Annapolis | $1.7M | $1.7M | $119K |
| 48 | Anne Arundel County Watershed Stewards Academy INC Millersville | $1.6M | $1.6M | $1.1M |
| 49 | Mid Atlantic Regional Air Management Assocation INC Towson | $1.6M | $1.6M | $322K |
| 50 | Chesapeake Wildlife Heritage INC Chester | $1.6M | $804K | $5.2M |