Environment nonprofits

Environment nonprofits. Browse 35,718 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. Ohia Legacy Initiative

    EIN 465739954 · Headquarters: Honolulu, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  2. Ohio Agriculture Conservation Council

    EIN 844898544 · Headquarters: REYNOLDSBURG, OH, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  3. Ohio Alliance for People and Environment

    EIN 320306022 · Headquarters: Bryan, OH, US · Environment · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  4. Ohio Auto Truck Recyclers Assoc

    EIN 310980231 · Headquarters: Columbus, OH, US · Environment · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  5. Ohio Brush Creek Herb Guild

    EIN 994387815 · Headquarters: West Union, OH, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  6. Ohio Chapter International Society of Arboriculture

    EIN 311190855 · Headquarters: FRAZEYSBURG, OH, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  7. Ohio City Gardeners

    EIN 201221055 · Headquarters: Cleveland, OH, US · Environment · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  8. Ohio Climbers Coalition

    EIN 463890619 · Headquarters: London, OH, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  9. Ohio Coastal Resource Management Project Inc

    EIN 341378424 · Headquarters: Streetsboro, OH, US · Environment · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  10. Ohio Conservation Federation

    EIN 463135275 · Headquarters: Plain City, OH, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  11. Ohio Conservative Energy Forum Attn Tony Zartman

    EIN 814039187 · Headquarters: COLUMBUS, OH, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  12. Ohio Ecological Restoration Association

    EIN 332365573 · Headquarters: Westerville, OH, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  13. Ohio Environmental Council Action Fund

    EIN 474903967 · Headquarters: COLUMBUS, OH, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  14. Ohio Forest Sanctuaries

    EIN 853949045 · Headquarters: MALVERN, OH, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  15. Ohio Forestry Association Foundation Inc

    EIN 316050550 · Headquarters: ZANESVILLE, OH, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  16. Ohio Hill Country Heritage Are

    EIN 311670755 · Headquarters: SHAWNEE, OH, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  17. Ohio Hunter and Trapper Education I

    EIN 204820413 · Headquarters: Cincinnati, OH, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  18. Ohio Independent Arborist Association LLC

    EIN 821850897 · Headquarters: Middlefield, OH, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  19. Ohio Invasive Plants Council

    EIN 203589988 · Headquarters: Columbus, OH, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  20. Ohio Land Bank Association

    EIN 831877481 · Headquarters: AKRON, OH, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  21. Ohio Land Stewardship

    EIN 450588921 · Headquarters: Concord Twp, OH, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  22. Ohio League of Conservation Voters

    EIN 522199585 · Headquarters: GAHANNA, OH, USA · Environment · Latest available filing year: 2012 · Primary form: IRS Form 990

  23. Ohio Motorized Trails Association

    EIN 311784676 · Headquarters: Logan, OH, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  24. Ohio Native Plant Month

    EIN 842514200 · Headquarters: Shaker Heights, OH, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  25. Ohio Natural Areas and Preserves Association

    EIN 455080814 · Headquarters: Johnstown, OH, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  26. Ohio Ocean Foundation Inc

    EIN 823762992 · Headquarters: Canton, OH, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  27. Ohio Outdoors Woman Inc

    EIN 311454711 · Headquarters: COLUMBUS, OH, USA · Environment · Latest available filing year: 2017 · Primary form: IRS Form 990-EZ

  28. Ohio Pirg Citizen Lobby

    EIN 134262363 · Headquarters: Columbus, OH, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  29. Ohio Pirg Education Fund Inc

    EIN 341960773 · Headquarters: Columbus, OH, US · Environment · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  30. Ohio Prairie Association

    EIN 341916915 · Headquarters: Sandusky, OH, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  31. Ohio Professional Applicators for Responsible Regulations

    EIN 341510706 · Headquarters: HILLIARD, OH, USA · Environment · Latest available filing year: 2018 · Primary form: IRS Form 990-EZ

  32. Ohio River Basin Water Resources Association

    EIN 611139840 · Headquarters: Georgetown, KY, US · Environment · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  33. Ohio River Foundation

    EIN 311704768 · Headquarters: Cincinnati, OH, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  34. Ohio River Scenic Route of Southern Indiana Inc

    EIN 352016577 · Headquarters: Jeffersonville, IN, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  35. Ohio River Trail Council

    EIN 352366103 · Headquarters: Monaca, PA, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  36. Ohio River Trails Inc

    EIN 311484996 · Headquarters: Steubenville, OH, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  37. Ohio River Valley Environmental Coalition

    EIN 311311861 · Headquarters: HUNTINGTON, WV, USA · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990

  38. Ohio River Way

    EIN 431986935 · Headquarters: CINCINNATI, OH, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  39. Ohio Scenic Rivers Association

    EIN 843258176 · Headquarters: Solon, OH, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  40. Ohio Smallmouth Alliance

    EIN 020647775 · Headquarters: Columbus, OH, US · Environment · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  41. Ohio State African Violet Society

    EIN 271387666 · Headquarters: Petersburg, KY, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  42. Ohio State Parks Foundation

    EIN 862157935 · Headquarters: Columbus, OH, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  43. Ohio State University Extension Seneca County Master Gardener Asso

    EIN 264405559 · Headquarters: Tiffin, OH, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  44. Ohio Stream Preservation Inc C/o Jeff Filarski

    EIN 341909500 · Headquarters: OAKWOOD VILLAGE, OH, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  45. Ohio Ust Community Improvement Corporation

    EIN 812052381 · Headquarters: COLUMBUS, OH, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  46. Ohio Valley Allies

    EIN 884090539 · Headquarters: BARNESVILLE, OH, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  47. Ohio Valley Conservation Coalition

    EIN 273414650 · Headquarters: Jackson, OH, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  48. Ohio Valley Environmental Advocates Inc

    EIN 921873844 · Headquarters: Wheeling, WV, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  49. Ohio Valley Giant Pumpkin Growers

    EIN 200631042 · Headquarters: Saegertown, PA, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  50. Ohio Valley Resource Conservation and Development Council

    EIN 316180563 · Headquarters: HILLSBORO, OH, USA · Environment · Latest available filing year: 2016 · Primary form: IRS Form 990-EZ

  51. Ohio Wetlands Association Inc

    EIN 453780020 · Headquarters: Columbus, OH, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  52. Ohio Wilderness League

    EIN 270543372 · Headquarters: Athens, OH, US · Environment · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  53. Ohio Wildlife Management Association

    EIN 833512984 · Headquarters: West Mansfield, OH, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  54. Ohio Wildlife Rehabilitators Association

    EIN 311358163 · Headquarters: Sunbuury, OH, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  55. Ohios Historic West Inc

    EIN 311686834 · Headquarters: Troy, OH, US · Environment · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  56. Ohme Gardens Friends Society

    EIN 262752655 · Headquarters: Wenatchee, WA, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  57. Ohu Ohu Koolau Inc

    EIN 203039461 · Headquarters: PEARL CITY, HI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  58. Oil & Gas Action Network

    EIN 820941015 · Headquarters: BERKELEY, CA, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  59. Oil Change USA

    EIN 743181474 · Headquarters: Washington, DC, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  60. Oisca International-USA

    EIN 275342567 · Headquarters: Raritan, NJ, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  61. Ojai Adventure Club

    EIN 842286581 · Headquarters: Ojai, CA, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  62. Ojai Childrens Memorial Garden

    EIN 842108231 · Headquarters: Ojai, CA, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  63. Ojai Raptor Center

    EIN 770543286 · Headquarters: Oak View, CA, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  64. Ojai Trees

    EIN 261940250 · Headquarters: Ojai, CA, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  65. Ojai Valley Defense Fund

    EIN 270429286 · Headquarters: OJAI, CA, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  66. Ojai Valley Green Coalition

    EIN 262157890 · Headquarters: Ojai, CA, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  67. Okaloosa United Residents for Saving Our Irreplaceable Land Inc

    EIN 331379808 · Headquarters: Baker, FL, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  68. Okamanpedan Development Association

    EIN 743158816 · Headquarters: Dolliver, IA, US · Environment · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  69. Okanogan Highlands Lavender Farm

    EIN 813972499 · Headquarters: TONASKET, WA, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  70. Okanogan Land Trust

    EIN 943112454 · Headquarters: OKANOGAN, WA, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  71. Okanogan Trails Coalition

    EIN 202456880 · Headquarters: Omak, WA, US · Environment · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  72. Okee Bay Mill Pond Lake Association Inc

    EIN 923646223 · Headquarters: Lodi, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  73. Oklahoma Association of Conservation Districts Inc

    EIN 730801393 · Headquarters: Oklahoma City, OK, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  74. Oklahoma Association of Resource Conservation & Development Council

    EIN 731414166 · Headquarters: Weatherford, OK, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  75. Oklahoma Asssociation for Environmental Education

    EIN 731529225 · Headquarters: Oklahoma City, OK, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  76. Oklahoma Bass Federation INC

    EIN 208126487 · Headquarters: CATOOSA, OK, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  77. Oklahoma Centennial Botanical Garden Inc

    EIN 470878581 · Headquarters: Tulsa, OK, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  78. Oklahoma City Beautiful Inc

    EIN 730785200 · Headquarters: Oklahoma City, OK, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  79. Oklahoma Clean Lakes Association

    EIN 731287690 · Headquarters: Oklahoma City, OK, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  80. Oklahoma Climbers Coalition

    EIN 881603038 · Headquarters: Oklahoma City, OK, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  81. Oklahoma Compost and Sustainability Association

    EIN 862133208 · Headquarters: Oklahoma City, OK, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  82. Oklahoma Conservation Congress Oklahoma Chapter

    EIN 731150552 · Headquarters: Stillwater, OK, US · Environment · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  83. Oklahoma County Master Gardeners

    EIN 900392642 · Headquarters: BETHANY, OK, USA · Environment · Latest available filing year: 2016 · Primary form: IRS Form 990-EZ

  84. Oklahoma County Master Gardeners Association

    EIN 843832426 · Headquarters: Oklahoma City Oklahoma, OK, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  85. Oklahoma Daffodil and Tulip Society

    EIN 994045162 · Headquarters: Blanchard, OK, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  86. Oklahoma Ecology Project Inc

    EIN 884393354 · Headquarters: Tulsa, OK, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  87. Oklahoma Energy Education Foundation

    EIN 204707442 · Headquarters: OKLAHOMA CITY, OK, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  88. Oklahoma Floodplain Managers Assoc

    EIN 731437151 · Headquarters: TULSA, OK, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  89. Oklahoma Garden Clubs

    EIN 481269211 · Headquarters: Bartlesville, OK, US · Environment · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  90. Oklahoma Garden Clubs

    EIN 731338874 · Headquarters: Hominy, OK, US · Environment · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  91. Oklahoma Garden Clubs

    EIN 731358960 · Headquarters: NORMAN, OK, US · Environment · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  92. Oklahoma Garden Clubs

    EIN 731358976 · Headquarters: Waynoka, OK, US · Environment · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  93. Oklahoma Garden Clubs

    EIN 731358980 · Headquarters: Anadarko, OK, US · Environment · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  94. Oklahoma Garden Clubs

    EIN 731359127 · Headquarters: Bartlesville, OK, US · Environment · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  95. Oklahoma Garden Clubs

    EIN 731359134 · Headquarters: Bartlesville, OK, US · Environment · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  96. Oklahoma Garden Clubs

    EIN 731359136 · Headquarters: Bartlesville, OK, US · Environment · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  97. Oklahoma Garden Clubs

    EIN 731359205 · Headquarters: Tulsa, OK, US · Environment · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  98. Oklahoma Garden Clubs

    EIN 731359214 · Headquarters: Broken Arrow, OK, US · Environment · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  99. Oklahoma Garden Clubs

    EIN 731359229 · Headquarters: Claremore, OK, US · Environment · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  100. Oklahoma Garden Clubs

    EIN 731359272 · Headquarters: FT COBB, OK, US · Environment · Latest available filing year: 2009 · Primary form: IRS Form 990-N

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