Environment nonprofits in Maryland

550 environmental nonprofits in Maryland file a Form 990. Together they report $342 million in revenue and hold $7.7 billion in assets.

Browse all 217 environmental nonprofits in Maryland →

The largest are National Marine Sanctuary Foundation, Chesapeake Bay Foundation Inc, and Montgomery County Green Bank Corporation.

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Environment in Maryland

Largest by revenue first.

National Marine Sanctuary Foundation 501(c)(3) · Silver Spring, MD	$36.0M
Chesapeake Bay Foundation Inc 501(c)(3) · Annapolis, MD	$35.4M
Montgomery County Green Bank Corporation 501(c)(3) · Rockville, MD	$25.5M
Alliance For The Chesapeake Bay Inc 501(c)(3) · Annapolis, MD	$16.0M
Trees For The Future Inc 501(c)(3) · Silver Spring, MD	$15.6M
Chesapeake Conservancy Inc 501(c)(3) · Annapolis, MD	$14.0M
Oceantic Network Inc 501(c)(3) · Baltimore, MD	$11.9M
EEnvironmental Policy Innovation Center 501(c)(3) · College Park, MD	$10.8M
Wild Earth Allies Inc 501(c)(3) · Chevy Chase, MD	$6.2M
Nature Forward Inc 501(c)(3) · Chevy Chase, MD	$5.9M
Baltimore Tree Trust Inc 501(c)(3) · Baltimore, MD	$5.8M
Maryland Coastal Bays Foundation Inc 501(c)(3) · Berlin, MD	$5.8M
Land Preservation Trust Inc 501(c)(3) · Cockeysville, MD	$5.5M
Shorerivers Inc 501(c)(3) · Easton, MD	$5.4M
Solid Waste Association Of North America Inc 501(c)(3) · Silver Spring, MD	$5.4M
National Park Trust Inc 501(c)(3) · Rockville, MD	$4.7M
Western Maryland Resource Conservation And Development 501(c)(3) · Hagerstown, MD	$4.6M
CChesapeake Climate Action Network 501(c)(3) · Takoma Park, MD	$4.0M
Irvine Natural Science Center Inc 501(c)(3) · Owings Mills, MD	$3.8M
Center For Watershed Protection 501(c)(3) · Fulton, MD	$3.8M
American Lumber Standard Committee Incorporated 501(c)(3) · Frederick, MD	$3.7M
Moonshot Missions Inc 501(c)(3) · Bethesda, MD	$3.7M
GGreentrust Alliance Inc 501(c)(3) · Rockville, MD	$3.6M
Arundel Rivers Federation Inc 501(c)(3) · Edgewater, MD	$3.5M
The Izaak Walton League Of America Inc 501(c)(3) · Gaithersburg, MD	$3.2M
Foundations Of Success Inc 501(c)(3) · Bethesda, MD	$3.1M
Blue Water Baltimore 501(c)(3) · Baltimore, MD	$2.9M
Rock Creek Conservancy Inc 501(c)(3) · Bethesda, MD	$2.9M
The Potomac Conservancy Inc 501(c)(3) · Bethesda, MD	$2.7M
Anacostia Watershed Society Inc 501(c)(3) · Bladensburg, MD	$2.6M
National Council On Radiation Protection And Measurements 501(c)(3) · Bethesda, MD	$2.5M
Chesapeake Research Consortium Inc 501(c)(3) · Edgewater, MD	$2.4M
Howard County Conservancy Inc 501(c)(3) · Woodstock, MD	$2.4M
Rachel Carson Council Inc 501(c)(3) · Bethesda, MD	$2.4M
Cylburn Arboretum Friends Inc 501(c)(3) · Baltimore, MD	$2.3M
Maryland Forestry Boards Foundation Inc 501(c)(3) · Annapolis, MD	$2.1M
Cecil Land Trust Inc 501(c)(3) · Elkton, MD	$2.1M
Friends Of Patterson Park Inc 501(c)(3) · Baltimore, MD	$2.1M
Echo Hill Outdoor School Inc 501(c)(3) · Worton, MD	$2.0M
Upstream Alliance Inc 501(c)(3) · Annapolis, MD	$2.0M
Voices For A Sustainable Future Inc 501(c)(3) · Takoma Park, MD	$2.0M
Eastern Shore Land Conservancy Inc 501(c)(3) · Easton, MD	$1.8M
Environmental Concern Inc 501(c)(3) · St Michael, MD	$1.8M
Alice Ferguson Foundation Inc 501(c)(3) · Accokeek, MD	$1.7M
Anne Arundel County Watershed Stewards Academy Inc 501(c)(3) · Millersville, MD	$1.6M
Mid Atlantic Regional Air Management Association Inc 501(c)(3) · Towson, MD	$1.6M
Howard Ecoworks Inc 501(c)(3) · Columbia, MD	$1.5M
Majority Action 501(c)(3) · Silver Spring, MD	$1.5M
Maryland League Of Conservation Voters Education Fund 501(c)(3) · Annapolis, MD	$1.5M
Chesapeake Legal Alliance Inc 501(c)(3) · Annapolis, MD	$1.5M
Chesapeake Audubon Society 501(c)(3) · Easton, MD	$1.5M
MMarec Action 501(c)(4) · Silver Spring, MD	$1.4M
Nuclear Information And Resource Service 501(c)(3) · Mount Rainier, MD	$1.4M
Team River Runner Inc 501(c)(3) · Rockville, MD	$1.4M
Defensores De La Cuenca 501(c)(3) · Hyattsville, MD	$1.3M
Public Employees For Environmental Responsibility Inc 501(c)(3) · Silver Spring, MD	$1.3M
C&O Canal Trust Inc 501(c)(3) · Williamsport, MD	$1.2M
OOpportunity Ministries Inc 501(c)(3) · Pasadena, MD	$1.2M
Adkins Arboretum Ltd 501(c)(3) · Ridgely, MD	$1.1M
Interfaith Partners For The Chesapeake Inc 501(c)(3) · Annapolis, MD	$1.1M
Chesapeake Rivers Association Inc 501(c)(3) · Annapolis, MD	$1.0M
The Severn River Association Inc 501(c)(3) · Annapolis, MD	$984K
American Chestnut Land Trust Inc 501(c)(3) · Prnc Frederck, MD	$982K
Harford Land Trust Inc 501(c)(3) · Bel Air, MD	$970K
American Center For Life Cycle Assessment 501(c)(6) · Bethesda, MD	$937K
Southern Maryland Resource Conservation & Development Board 501(c)(3) · Leonardtown, MD	$911K
Vine Corps Inc 501(c)(3) · Cheverly, MD	$882K
Baltimore Green Space A Land Trustfor Community-Managed Open Space In 501(c)(3) · Baltimore, MD	$841K
Chesapeake Wildlife Heritage Inc 501(c)(3) · Chester, MD	$804K
Our Climate Education Fund 501(c)(3) · Bethesda, MD	$797K
Scenic Rivers Land Trust Inc 501(c)(3) · Annapolis, MD	$777K
Old-Growth Forest Network Inc 501(c)(3) · Berlin, MD	$690K
National Turfgrass Evaluation Program Inc 501(c)(3) · Beltsville, MD	$690K
Thorpewood Inc 501(c)(3) · Thurmont, MD	$669K
Ioos Association 501(c)(3) · Silver Spring, MD	$658K
Evergreen Heritage Center Foundation Inc 501(c)(3) · Frostburg, MD	$646K
Lower Shore Land Trust Inc 501(c)(3) · Snow Hill, MD	$602K
Ecolatinos Inc 501(c)(3) · College Park, MD	$595K
Solutions From The Land 501(c)(3) · Luthvle Timon, MD	$550K
Chesapeake Conservation Landscaping Council Inc 501(c)(3) · Ridgely, MD	$543K
Chesapeake Stormwater Network Inc 501(c)(3) · Catonsville, MD	$512K
Neighbor Space Of Baltimore County 501(c)(3) · Lutherville, MD	$495K
Bay Journal Media Inc 501(c)(3) · Mayo, MD	$475K
Association For Nature -Based Education Inc 501(c)(3) · Glen Arm, MD	$472K
Climate United Fund 501(c)(3) · Bethesda, MD	$466K
Waterkeepers Chesapeake Inc 501(c)(3) · Silver Spring, MD	$438K
SSolar Freeze Inc 501(c)(3) · Hyattsville, MD	$436K
Gunpowder Riverkeeper Inc 501(c)(3) · Monkton, MD	$431K
Catoctin Land Trust Inc 501(c)(3) · Frederick, MD	$415K
Fox Haven Center 501(c)(3) · Jefferson, MD	$411K
Climate Access Fund Corporation 501(c)(3) · Baltimore, MD	$406K
FFair Hill Environmental Foundation Inc 501(c)(3) · Elkton, MD	$396K
Roland Park Community Foundation Inc 501(c)(3) · Baltimore, MD	$386K
Cove Point Natural Heritage Trust Inc 501(c)(3) · Lusby, MD	$385K
LLand And Cultural Preservation Fund Inc 501(c)(3) · Walkersville, MD	$382K
Filbert Street Garden 501(c)(3) · Baltimore, MD	$357K
Wildlife Achievement Club Chapter Inc 501(c)(3) · Damascus, MD	$355K
Species Survival Network 501(c)(3) · Highland, MD	$346K
Bethesda Green 501(c)(3) · Bethesda, MD	$341K
UUnited For Clean Power 501(c)(4) · Bowie, MD	$306K

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