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. Foundation for Environmental Security

    EIN 522216481 · Headquarters: DARNESTOWN, MD, US · Environment · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  2. Foundation for MD Cons History Inc

    EIN 451266015 · Headquarters: Cumberland, MD, USA · Environment · Latest available filing year: 2022 · Primary form: IRS Form 990

  3. Foundation for Ocean Renewables Limited

    EIN 432101518 · Headquarters: DARNESTOWN, MD, USA · Environment · Latest available filing year: 2015 · Primary form: IRS Form 990

  4. Foundation of the World

    EIN 264637026 · Headquarters: La Plata, MD, US · Environment · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  5. Foundations of Success Inc

    EIN 205561272 · Headquarters: BETHESDA, MD, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  6. Fox Haven Center Inc

    EIN 010662244 · Headquarters: JEFFERSON, MD, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  7. Frederick Green Inc

    EIN 863969201 · Headquarters: New Market, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. Friends of Blackwater Incorporated

    EIN 521535023 · Headquarters: CAMBRIDGE, MD, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  9. Friends of Cabin John Creek Inc

    EIN 462293024 · Headquarters: CABIN JOHN, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  10. Friends of Calvert Cliffs State Park

    EIN 521884475 · Headquarters: LUSBY, MD, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  11. Friends of Cascade Lake Inc

    EIN 861987881 · Headquarters: Baltimore, MD, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  12. Friends of Chesapeake Gateways Inc

    EIN 203998966 · Headquarters: Easton, MD, USA · Environment · Latest available filing year: 2011 · Primary form: IRS Form 990-EZ

  13. Friends of Chevy Chase Circle

    EIN 464482719 · Headquarters: CHEVY CHASE, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  14. Friends of Deep Creek Lake

    EIN 263453931 · Headquarters: SWANTON, MD, US · Environment · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  15. Friends of Downs Park Inc

    EIN 521752939 · Headquarters: Pasdena, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  16. Friends of Environmental Education Inc

    EIN 863016314 · Headquarters: KENSINGTON, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  17. Friends of Greenbury Point Inc

    EIN 331257504 · Headquarters: Annapolis, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  18. Friends of Harford Education Fund Inc

    EIN 651293681 · Headquarters: Bel Air, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  19. Friends of Hart-miller Island Inc

    EIN 853370049 · Headquarters: Middle River, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  20. Friends of Hashawha Bear Branch

    EIN 873588980 · Headquarters: Westminster, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  21. Friends of Helen Avalynne Tawes Garden Inc

    EIN 061713445 · Headquarters: Edgewater, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  22. Friends of Herring Run Parks Inc

    EIN 462321951 · Headquarters: Baltimore, MD, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  23. Friends of Liberty Reservoir

    EIN 991823727 · Headquarters: Finksburg, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  24. Friends of Maydale Conservation Park Inc

    EIN 842667924 · Headquarters: Burtonsville, MD, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  25. Friends of Patterson Park Inc

    EIN 522094989 · Headquarters: Baltimore, MD, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  26. Friends of Seneca Creek Patuxent River State Parks Inc

    EIN 311550051 · Headquarters: Gaithersburg, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  27. Friends of Sligo Creek

    EIN 522345099 · Headquarters: Takoma Park, MD, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  28. Friends of Smallwood State Park Inc

    EIN 521963200 · Headquarters: Marbury, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  29. Friends of Stevenson Inc

    EIN 475459522 · Headquarters: BALTIMORE, MD, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  30. Friends of Still Creek Inc

    EIN 260658034 · Headquarters: Greenbelt, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  31. Friends of Tapiche

    EIN 883070969 · Headquarters: Bethesda, MD, US · Environment · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  32. Friends of Ten Mile Creek and Little Seneca Reservoir

    EIN 473499435 · Headquarters: Clarksburg, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  33. Friends of the Association for the Conservation of the Mono Titi Inc

    EIN 752990757 · Headquarters: Hunt Valley, MD, US · Environment · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  34. Friends of the Bohemia Inc

    EIN 473599804 · Headquarters: Chesapeake City, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  35. Friends of the Ecosystem Restoration Movement Inc

    EIN 992447866 · Headquarters: SILVER SPRING, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  36. Friends of the Maryland State Forests and Parks Inc

    EIN 522049562 · Headquarters: Ocean City, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  37. Friends of the Nanticoke River

    EIN 521870385 · Headquarters: NANTICOKE, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  38. Friends of the North East Creek Inc

    EIN 844412721 · Headquarters: North East, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  39. Friends of Waterford Park Inc

    EIN 474164689 · Headquarters: Frederick, MD, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  40. Friends of Wormans Mill Park

    EIN 392891091 · Headquarters: Frederick, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  41. Frisky's Wildlife and Primate Sanctuary Inc

    EIN 522055816 · Headquarters: WOODSTOCK, MD, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  42. Funam Development Association USA Inc

    EIN 934003863 · Headquarters: GERMANTOWN, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  43. Gaia Group

    EIN 273666109 · Headquarters: Bowie, MD, US · Environment · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  44. Galanthus Foundation Inc

    EIN 823364397 · Headquarters: TOWSON, MD, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  45. Garden Club of Chevy Chase Inc

    EIN 933877647 · Headquarters: Chevy Chase, MD, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  46. Garden Club of Rock Hall

    EIN 472669824 · Headquarters: CHESTERTOWN, MD, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  47. Gemm Comm Limited

    EIN 862829595 · Headquarters: Forestville, MD, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  48. Georges Creek Watershed Association

    EIN 522177167 · Headquarters: BARTON, MD, US · Environment · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  49. Ghetto Love Inc

    EIN 813100563 · Headquarters: Baltimore, MD, US · Environment · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  50. Gillis Environmental Education Inc

    EIN 843141750 · Headquarters: Barnesville, MD, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  51. Giving Is Living

    EIN 883459734 · Headquarters: DISTRICT HEIGHTS, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  52. Global Health Narratives for Change

    EIN 611588715 · Headquarters: BETHESDA, MD, US · Environment · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  53. Global Smart Energy Federation

    EIN 273645859 · Headquarters: BALTIMORE, MD, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  54. Global Water Promise Corp

    EIN 364801858 · Headquarters: Baltimore, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  55. Go Green Oc Inc

    EIN 832991171 · Headquarters: OCEAN CITY, MD, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  56. Gogrow Inc

    EIN 810804545 · Headquarters: Nottingham, MD, US · Environment · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  57. Goode Earth Foundation

    EIN 992527137 · Headquarters: Capial Heights, MD, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  58. Gray Manor & Northshire Community Association

    EIN 800420227 · Headquarters: Dundalk, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  59. Greater Fort Foote Area Recreational Clutural and Historic

    EIN 522234265 · Headquarters: Fort Washington, MD, US · Environment · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  60. Greater Sandy Spring Green Space Inc

    EIN 522060280 · Headquarters: Sandy Spring, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  61. Greater Washington Aquatic Plants Association

    EIN 455636311 · Headquarters: Laurel, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  62. Greater Waverly Coalition Inc

    EIN 881843398 · Headquarters: Baltimore, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  63. Green Acres Garden Club

    EIN 521305964 · Headquarters: Towson, MD, US · Environment · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  64. Green Advantage Inc

    EIN 522051596 · Headquarters: FREDERICK, MD, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  65. Green Burial Association of Maryland Inc

    EIN 475587110 · Headquarters: COCKEYSVILLE, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  66. Green Can Recycling Inc

    EIN 822784257 · Headquarters: ELKTON, MD, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  67. Green Deshis Inc

    EIN 831986806 · Headquarters: Ellicott City, MD, US · Environment · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  68. Green Habitat

    EIN 814179751 · Headquarters: FORT WASHINGTON, MD, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  69. Green Haiti International Ghi Ltd

    EIN 851123377 · Headquarters: Baltimore, MD, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  70. Green Infrastructure Leadership Exchange

    EIN 393694244 · Headquarters: Parkville, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  71. Green Spark Inc

    EIN 990528179 · Headquarters: Severn, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  72. Green Spring Valley Garden Club Inc

    EIN 521081081 · Headquarters: REISTERSTOWN, MD, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  73. Green Steps Partner Inc

    EIN 811633074 · Headquarters: Parkville, MD, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  74. Greennonprofits Org Inc

    EIN 260812863 · Headquarters: Columbia, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  75. Greensong Incorporated

    EIN 461979722 · Headquarters: Frederick, MD, US · Environment · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  76. Greenthinker

    EIN 832321774 · Headquarters: Takoma Park, MD, US · Environment · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  77. Greentrust Alliance

    EIN 223745010 · Headquarters: HUNT VALLEY, MD, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  78. Greenwheaton Inc

    EIN 371638771 · Headquarters: SILVER SPRING, MD, US · Environment · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  79. Growth Action Network of Anne Arundel County Inc

    EIN 464237877 · Headquarters: Arnold, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  80. Gunpowder Riverkeeper Inc

    EIN 271517453 · Headquarters: Monkton, MD, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  81. Gwynns Falls Watershed Association Inc

    EIN 522089745 · Headquarters: Baltimore, MD, US · Environment · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  82. H2eco Foundation Inc

    EIN 412347450 · Headquarters: Towson, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  83. Hanover Road Association Inc

    EIN 521782079 · Headquarters: Upperco, MD, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  84. Harford County Climate Action

    EIN 475326183 · Headquarters: Bel Air, MD, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  85. Harford Glen Foundation Inc

    EIN 521737815 · Headquarters: BEL AIR, MD, US · Environment · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  86. Harford Land Trust Inc

    EIN 521721553 · Headquarters: BEL AIR, MD, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  87. Head of Chesapeake Watershed Alliance Inc

    EIN 844013215 · Headquarters: HAVRE DE GRACE, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  88. Health & Energy Institute

    EIN 521128877 · Headquarters: Takoma Park, MD, US · Environment · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  89. Help Our Marine Environment Inc

    EIN 261445030 · Headquarters: Chevy Chase, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  90. High 5 Initiative

    EIN 843505077 · Headquarters: NORTH EAST, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  91. High Impact Environmental Inc

    EIN 271465668 · Headquarters: CHESTERTOWN, MD, US · Environment · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  92. Holland Island Preservation Foundation

    EIN 521903497 · Headquarters: Wenona, MD, US · Environment · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  93. Holly Springs Nature Conservancy and Wildlife Sanctuary Inc

    EIN 020784705 · Headquarters: Hampstead, MD, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  94. Home Ground Inc

    EIN 452507068 · Headquarters: LaVale, MD, US · Environment · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  95. Homeland Community Foundation

    EIN 311633370 · Headquarters: Baltimore, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  96. Homeland Garden Club

    EIN 934186527 · Headquarters: Baltimore, MD, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  97. Horizon of Hope Inc

    EIN 934410095 · Headquarters: WOODBINE, MD, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  98. Horticultural Society of Md Inc

    EIN 521277255 · Headquarters: LUTHERVILLETIMONIUM, MD, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  99. House of Prayer for All People Elijah Endtime Ministries Inc

    EIN 883388387 · Headquarters: Port Deposit, MD, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  100. Howard Ecoworks Inc

    EIN 812054803 · Headquarters: COLUMBIA, MD, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

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