Environment nonprofits in Maryland

Environment nonprofits in Maryland. Browse 696 public nonprofit profiles. Review organization identities, available filing years, and their complete CharitySense profiles.

Location refers to headquarters recorded in public sources, not an organization’s service area. Classification describes its reported category and does not assess its effectiveness.

Nonprofit profiles

  1. Center for Invasive Species Prevention Inc

    EIN 471745434 · Headquarters: BETHESDA, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  2. Center for Research of Biotoxin Associated Illnesses Inc

    EIN 521830845 · Headquarters: POCOMOKE CITY, MD, USA · Environment · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ

  3. Center for Responsible Technology Inc

    EIN 133201656 · Headquarters: Bethesda, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  4. Center for Watershed Protection Inc

    EIN 541644387 · Headquarters: FULTON, MD, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  5. Central Maryland Gold Prospectors Inc

    EIN 813744254 · Headquarters: Lothian, MD, USA · Environment · Latest available filing year: 2021 · Primary form: IRS Form 990-PF

  6. Central Maryland Heritage League Inc

    EIN 526452106 · Headquarters: Middletown, MD, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  7. Change 4 Good Incorporated

    EIN 473465720 · Headquarters: FT WASHINGTON, MD, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  8. Cherish the Earth-bal Tashcis Company

    EIN 843100264 · Headquarters: BALTIMORE, MD, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  9. Chesapeake Audubon Society

    EIN 521038833 · Headquarters: EASTON, MD, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  10. Chesapeake Bay Association Inc

    EIN 872595741 · Headquarters: Sparrows Point, MD, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  11. Chesapeake Bay Foundation

    EIN 526065757 · Headquarters: Annapolis, MD, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  12. Chesapeake Bay Herb Society Inc

    EIN 200471855 · Headquarters: Easton, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  13. Chesapeake Baysavers Foundation Inc

    EIN 275430524 · Headquarters: ANNAPOLIS, MD, USA · Environment · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ

  14. Chesapeake Baysavers Inc

    EIN 743221162 · Headquarters: ANNAPOLIS, MD, USA · Environment · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ

  15. Chesapeake Chapter of Awma

    EIN 465179429 · Headquarters: Baltimore, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  16. Chesapeake Climate Action Network Inc

    EIN 113644283 · Headquarters: TAKOMA PARK, MD, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  17. Chesapeake Conservancy Inc

    EIN 262271377 · Headquarters: ANNAPOLIS, MD, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  18. Chesapeake Conservation Landscaping Council

    EIN 900475197 · Headquarters: SILVER SPRING, MD, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  19. Chesapeake Conservation Nurseries Inc

    EIN 260437751 · Headquarters: Marydel, MD, US · Environment · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  20. Chesapeake Ecology Center Inc

    EIN 061728672 · Headquarters: Annapolis, MD, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  21. Chesapeake Education Arts and Research Society

    EIN 061767460 · Headquarters: Sandy Spring, MD, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  22. Chesapeake Energy Conservation Inc

    EIN 460799814 · Headquarters: ST MICHAELS, MD, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  23. Chesapeake Heritage Archeological and Paleontological Foundation Inc

    EIN 934017446 · Headquarters: SAINT LEONARD, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  24. Chesapeake Heritage Conservancy Inc

    EIN 521901328 · Headquarters: Elton, MD, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  25. Chesapeake Islands Research Center Inc

    EIN 882874677 · Headquarters: BALTIMORE, MD, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  26. Chesapeake Legal Alliance Inc

    EIN 264349757 · Headquarters: ANNAPOLIS, MD, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  27. Chesapeake Power Foundation Inc

    EIN 844091980 · Headquarters: BETHESDA, MD, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  28. Chesapeake Renaissance Inc

    EIN 474868739 · Headquarters: Forest Hill, MD, US · Environment · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  29. Chesapeake Research Consortium Inc

    EIN 237245037 · Headquarters: EDGEWATER, MD, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  30. Chesapeake Rivers Association

    EIN 010729385 · Headquarters: ANNAPOLIS, MD, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  31. Chesapeake Stormwater Network Inc

    EIN 264054856 · Headquarters: FREELAND, MD, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  32. Chesapeake Wildlife Heritage Inc

    EIN 520178636 · Headquarters: CHESTER, MD, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  33. Chester River Association Inc

    EIN 522147118 · Headquarters: CHESTERTOWN, MD, USA · Environment · Latest available filing year: 2017 · Primary form: IRS Form 990

  34. Cheverly Green Infrastructure Committee Inc

    EIN 991074277 · Headquarters: CHEVERLY, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  35. Choose Health Be Happy

    EIN 922029798 · Headquarters: Upper Marlboro, MD, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  36. Choptank Riverkeeper Inc

    EIN 204488939 · Headquarters: Easton, MD, US · Environment · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  37. Citizens Rights and Heritage Group

    EIN 208269031 · Headquarters: LAVALE, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  38. Citizens to Conserve and Restore Indian Creek Ccric Inc

    EIN 522176072 · Headquarters: Greenbelt, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  39. Clean Fuels Foundation

    EIN 521961154 · Headquarters: POTOMAC, MD, USA · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990

  40. Clean Islands International Inc

    EIN 521801877 · Headquarters: PASADENA, MD, USA · Environment · Latest available filing year: 2022 · Primary form: IRS Form 990

  41. Clean Water & Sanitation International Organization Inc

    EIN 271095432 · Headquarters: Hyattsville, MD, US · Environment · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  42. Clear Genesis Inc

    EIN 650777985 · Headquarters: Columbia, MD, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  43. Clear Skies Foundation

    EIN 830939004 · Headquarters: New Market, MD, US · Environment · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  44. Clear Spring Garden Club

    EIN 521978749 · Headquarters: Clear Spring, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  45. Climate Access Fund Corporation

    EIN 824597787 · Headquarters: Baltimore, MD, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  46. Climate Communications Coalition Inc

    EIN 863539216 · Headquarters: Frederick, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  47. Climate First Inc

    EIN 462708294 · Headquarters: TAKOMA PARK, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  48. Climate United Fund

    EIN 922069788 · Headquarters: BETHESDA, MD, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  49. Climatecriticalearth Ltd

    EIN 872460707 · Headquarters: Baltimore, MD, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  50. Climb for Hope Inc

    EIN 204672910 · Headquarters: BALTIMORE, MD, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  51. Clozynergy Inc

    EIN 800735293 · Headquarters: Upper Marlboro, MD, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  52. Coalition Against Childhood Lead Poisoning Inc

    EIN 521721649 · Headquarters: BALTIMORE, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  53. Coalition for Affordable Solar Energy Inc

    EIN 453756314 · Headquarters: BELTSVILLE, MD, USA · Environment · Latest available filing year: 2012 · Primary form: IRS Form 990

  54. Coastal Heritage Alliance Inc

    EIN 562421814 · Headquarters: ST MICHAELS, MD, USA · Environment · Latest available filing year: 2017 · Primary form: IRS Form 990-EZ

  55. Common Ground Earth Inc

    EIN 921119074 · Headquarters: BEL AIR, MD, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  56. Common Resilience Partners

    EIN 873404445 · Headquarters: College Park, MD, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  57. Community Commons Inc

    EIN 521106898 · Headquarters: Frederick, MD, US · Environment · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  58. Community Design Lab

    EIN 392501983 · Headquarters: Germantwon, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  59. Community Food Forest Collective Inc

    EIN 990920195 · Headquarters: TAKOMA PARK, MD, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  60. Community Native Planting Project Inc

    EIN 923116868 · Headquarters: Bladensburg, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  61. Community Research Inc

    EIN 262951901 · Headquarters: College Park, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  62. Compostology Corp

    EIN 922159021 · Headquarters: Boyds, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  63. Concerned Citizens for Proper Land Use Inc

    EIN 851633352 · Headquarters: Annapolis, MD, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  64. Conquest Foundation Inc

    EIN 522233255 · Headquarters: Centreville, MD, US · Environment · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  65. Conservancy for Charles County Inc

    EIN 522050610 · Headquarters: Waldorf, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  66. Conservation Montgomery

    EIN 010973341 · Headquarters: Silver Spring, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  67. Conservation Treaty Support Fund Inc

    EIN 521493562 · Headquarters: Chevy Chase, MD, US · Environment · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  68. Consistent Life

    EIN 581886223 · Headquarters: Silver Spring, MD, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  69. Coral Reef Encounter Inc

    EIN 923585632 · Headquarters: Columbia, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  70. Corner Sanctuary Inc

    EIN 830993854 · Headquarters: Pocomoke City, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  71. Council for Textile Recycling Inc

    EIN 521778642 · Headquarters: ABINGDON, MD, USA · Environment · Latest available filing year: 2018 · Primary form: IRS Form 990-EZ

  72. Cove Creek Conservation & Wildlife Foundation

    EIN 522309497 · Headquarters: Stevensville, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  73. Cove Creek Conservation and Wildlife Foundation Inc

    EIN 521702824 · Headquarters: Chevy Chase, MD, US · Environment · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  74. Cove Point Natural Heritage Trustinc

    EIN 521910341 · Headquarters: LUSBY, MD, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  75. Crab Creek Conservancy

    EIN 852489988 · Headquarters: Annapolis, MD, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  76. Creative Climate Management Institute Ltd

    EIN 880706010 · Headquarters: CHEVY CHASE, MD, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  77. Creative Education Association Inc

    EIN 522337240 · Headquarters: Annapolis, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  78. Cricket Maze Cave Conservancy Ltd

    EIN 853200177 · Headquarters: BEL AIR, MD, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  79. Crownsville Conservancy Inc

    EIN 550829950 · Headquarters: CROWNSVILLE, MD, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  80. Cylburn Arboretum Friends Inc

    EIN 237091589 · Headquarters: BALTIMORE, MD, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  81. D7etta Corporation

    EIN 852826454 · Headquarters: Baltimore, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  82. Davis Homewood Foundation Inc

    EIN 830557383 · Headquarters: SALISBURY, MD, USA · Environment · Latest available filing year: 2018 · Primary form: IRS Form 990-PF

  83. Deep Creek Watershed Foundation Inc

    EIN 811208194 · Headquarters: OAKLAND, MD, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  84. Defensores De La Cuenca

    EIN 851090314 · Headquarters: CHEVERLY, MD, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  85. Delmarva RC&D

    EIN 800745478 · Headquarters: Cambridge, Maryland, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  86. Dickerson Community Association

    EIN 522155505 · Headquarters: Dickerson, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  87. District Cleanups

    EIN 873371995 · Headquarters: Annapolis, MD, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  88. Dorchester Citizens for Planned Growth Inc

    EIN 260451978 · Headquarters: Cambridge, MD, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  89. Duvall Creek Environmental Trust Lld

    EIN 562283700 · Headquarters: ANNAPOLIS, MD, US · Environment · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  90. Earth Guardians

    EIN 841397083 · Headquarters: Laurel, MD, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  91. Earth Help Today Inc

    EIN 845123889 · Headquarters: Bethesda, MD, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  92. Earthreports Inc

    EIN 223878950 · Headquarters: UPPER MARLBORO, MD, USA · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  93. Earths Visible Energy

    EIN 262590790 · Headquarters: Oxon Hill, MD, US · Environment · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  94. Eastern Shore Building Industry

    EIN 521517644 · Headquarters: SALISBURY, MD, USA · Environment · Latest available filing year: 2012 · Primary form: IRS Form 990

  95. Eastern Shore Heritage Inc

    EIN 522270316 · Headquarters: CHESTERTOWN, MD, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  96. Eastern Shore Land Conservancy Inc

    EIN 521711989 · Headquarters: EASTON, MD, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  97. Echo Hill Outdoor School Inc

    EIN 237301918 · Headquarters: WORTON, MD, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  98. Echoes of Nature Inc

    EIN 274361114 · Headquarters: Bowie, MD, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  99. Eco Moco Inc

    EIN 934659534 · Headquarters: Potomac, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  100. Eco Viable

    EIN 922722826 · Headquarters: Potomac, MD, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

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