Environment nonprofits in Ohio

Environment nonprofits in Ohio. Browse 961 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. Mt Auburn Garden Initiative

    EIN 991939097 · Headquarters: Cincinnati, OH, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  2. Mud Run Conservancy

    EIN 824229895 · Headquarters: Enon, OH, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  3. Muskingum County Responsible Solution Team

    EIN 311407722 · Headquarters: Zanesville, OH, US · Environment · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  4. Muskingum Riverway Advocacy Council

    EIN 465043987 · Headquarters: ZANESVILLE, OH, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  5. Muskingum Valley Garden Society Inc

    EIN 821549155 · Headquarters: ZANESVILLE, OH, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  6. Muskingum Watershed Conservancy Foundation Inc

    EIN 341953261 · Headquarters: NEW PHILADELPHIA, OH, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  7. Mycosolutions

    EIN 922532019 · Headquarters: Olmsted Twp, OH, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  8. NATIONAL SCENIC BYWAY FOUNDATION National Scenic Byway Association

    EIN 200885499 · Headquarters: Millersburg, OH, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  9. Native Orchid Preservation and Education Society

    EIN 834025205 · Headquarters: Cibcinnati, OH, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  10. Natural Areas Land Conservancy

    EIN 510542269 · Headquarters: MORELAND HILLS, OH, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  11. Nature Center Association of Caesar Creek

    EIN 272778918 · Headquarters: Waynesville, OH, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  12. Natures Edge Inc

    EIN 030630678 · Headquarters: Gates Mills, OH, USA · Environment · Latest available filing year: 2022 · Primary form: IRS Form 990-PF

  13. Natures Housekeepers Inc

    EIN 811322156 · Headquarters: FINDLAY, OH, US · Environment · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  14. Naturewise Columbus

    EIN 991874129 · Headquarters: Blacklick, OH, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  15. Neighbors Opposing Pit Expansion

    EIN 300960893 · Headquarters: NEW RICHMOND, OH, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  16. Nettle Lake Preservation and Improvement Association

    EIN 341691856 · Headquarters: Montpelier, OH, US · Environment · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  17. New Bremen Giant Pumpkin Growers

    EIN 542169995 · Headquarters: NEW BREMEN, OH, USA · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  18. New Frackers Project

    EIN 472774570 · Headquarters: North Lawrence, OH, US · Environment · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  19. New Philadelphia Rotary Heritage Fund

    EIN 473647396 · Headquarters: NEW PHILADELPHIA, OH, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  20. Nigerian Association of Pharmacists Inc

    EIN 432115497 · Headquarters: CINCINNATI, OH, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  21. Nobles Pond Drainage District Inc

    EIN 874744881 · Headquarters: Canton, OH, US · Environment · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  22. Nopec Foundation Inc

    EIN 842544336 · Headquarters: SOLON, OH, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  23. Nordonia Hills Garden Club

    EIN 320471159 · Headquarters: Macedonia, OH, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  24. Norma Johnson Conservation Center

    EIN 341949648 · Headquarters: NEW PHILADELPHIA, OH, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  25. North Broadway Street Association

    EIN 264217580 · Headquarters: Columbus, OH, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  26. North Coast Stars Inc

    EIN 341472674 · Headquarters: BRECKSVILLE, OH, US · Environment · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  27. North End Environmental Development

    EIN 562309932 · Headquarters: Girard, OH, US · Environment · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  28. North Royalton Community Garden

    EIN 273195720 · Headquarters: North Royalton, OH, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  29. Northeast Ohio Chapter of the United States Green Building Counc

    EIN 030480658 · Headquarters: Mayfield, OH, US · Environment · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  30. Northeast Ohio Daylilly Society

    EIN 421582920 · Headquarters: Moreland Hills, OH, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  31. Northeast Ohio Pollinator Society Inc

    EIN 920702523 · Headquarters: Jefferson, OH, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  32. Northeastern Ohio Ofrestry Association

    EIN 834026793 · Headquarters: Salem, OH, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  33. Northern Ohio Chapter of the Air and Waste Management Association

    EIN 341527269 · Headquarters: Seven Hills, OH, US · Environment · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  34. Northern Tuscarawas Land Trust

    EIN 861387836 · Headquarters: ZOARVILLE, OH, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  35. Northside Greenspace Incorporated

    EIN 311374344 · Headquarters: cincinnati, OH, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  36. Northwest Civic Association

    EIN 237029745 · Headquarters: Columbus, OH, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  37. Northwest Ohio Green Bldg Council

    EIN 680668482 · Headquarters: Toledo, OH, US · Environment · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  38. Northwestern Ohio Rails to Trails

    EIN 341736699 · Headquarters: DELTA, OH, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  39. Northwood Park Garden Club

    EIN 311586420 · Headquarters: Columbus, OH, US · Environment · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  40. Nutrient Stewardship Council

    EIN 471496411 · Headquarters: COLUMBUS, OH, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  41. Oak Harbor Chamber Foundation Inc

    EIN 454223751 · Headquarters: OAK HARBOR, OH, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  42. Oak Openings Region Conservancy Inc

    EIN 341671402 · Headquarters: HOLLAND, OH, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  43. Oceans Ohio Inc

    EIN 822085364 · Headquarters: Massillon, OH, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  44. Ohio Agriculture Conservation Council

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

  45. Ohio Alliance for People and Environment

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

  46. Ohio Auto Truck Recyclers Assoc

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

  47. Ohio Brush Creek Herb Guild

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

  48. Ohio Chapter International Society of Arboriculture

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

  49. Ohio City Gardeners

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

  50. Ohio Climbers Coalition

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

  51. Ohio Coastal Resource Management Project Inc

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

  52. Ohio Conservation Federation

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

  53. 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

  54. Ohio Ecological Restoration Association

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

  55. Ohio Environmental Council Action Fund

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

  56. Ohio Forest Sanctuaries

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

  57. Ohio Forestry Association Foundation Inc

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

  58. Ohio Hill Country Heritage Are

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

  59. Ohio Hunter and Trapper Education I

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

  60. Ohio Independent Arborist Association LLC

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

  61. Ohio Invasive Plants Council

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

  62. Ohio Land Bank Association

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

  63. Ohio Land Stewardship

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

  64. Ohio League of Conservation Voters

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

  65. Ohio Motorized Trails Association

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

  66. Ohio Native Plant Month

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

  67. Ohio Natural Areas and Preserves Association

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

  68. Ohio Ocean Foundation Inc

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

  69. Ohio Outdoors Woman Inc

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

  70. Ohio Pirg Citizen Lobby

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

  71. Ohio Pirg Education Fund Inc

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

  72. Ohio Prairie Association

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

  73. Ohio Professional Applicators for Responsible Regulations

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

  74. Ohio River Foundation

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

  75. Ohio River Trails Inc

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

  76. Ohio River Way

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

  77. Ohio Scenic Rivers Association

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

  78. Ohio Smallmouth Alliance

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

  79. Ohio State Parks Foundation

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

  80. 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

  81. 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

  82. Ohio Ust Community Improvement Corporation

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

  83. Ohio Valley Allies

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

  84. Ohio Valley Conservation Coalition

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

  85. 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

  86. Ohio Wetlands Association Inc

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

  87. Ohio Wilderness League

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

  88. Ohio Wildlife Management Association

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

  89. Ohio Wildlife Rehabilitators Association

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

  90. Ohios Historic West Inc

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

  91. Old River Valley Place of Nature Foundation

    EIN 311278721 · Headquarters: Oxford, OH, US · Environment · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  92. Olentangy River Valley Association Inc

    EIN 311253500 · Headquarters: Delaware, OH, US · Environment · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  93. Olentangy Watershed Alliance

    EIN 311763712 · Headquarters: Columbus, OH, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  94. Olmsted Falls Garden Club

    EIN 341589333 · Headquarters: Olmsted Twp, OH, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  95. Olmsted Township Co-op

    EIN 334134992 · Headquarters: Olmsted Falls, OH, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  96. Onion Bag Litter Prevention Project

    EIN 932034441 · Headquarters: MOUNT VERNON, OH, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  97. Operator Training Committee of Ohio Inc

    EIN 316065198 · Headquarters: Springfield, OH, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  98. Ottawa River Coalition

    EIN 341760201 · Headquarters: Lima, OH, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  99. Ottawa River Kleanup Association Inc

    EIN 341919371 · Headquarters: Toledo, OH, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  100. Owl Creek Conservancy

    EIN 311696161 · Headquarters: MOUNT VERNON, OH, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

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