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. Oregon Websites and Watershed Project Inc

    EIN 911814381 · Headquarters: Cottage Grove, OR, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  2. Oregon Wild Horse Organization

    EIN 882678261 · Headquarters: Drain, OR, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  3. Oregon Wildlife Institute

    EIN 208792784 · Headquarters: Corvallis, OR, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  4. Oregon Women in Timber

    EIN 930712362 · Headquarters: DALLAS, OR, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  5. Oregonians for Renewable Energy Progress

    EIN 462328549 · Headquarters: Portland, OR, US · Environment · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  6. Oregonians in Action

    EIN 930844065 · Headquarters: Tigard, OR, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  7. Oregonians in Action Fund

    EIN 912096564 · Headquarters: TUKWILA, WA, USA · Environment · Latest available filing year: 2020 · Primary form: IRS Form 990-PF

  8. Oregons Vanished

    EIN 331635907 · Headquarters: Happy Valley, OR, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  9. Orenda Wildlife Land Trust Inc

    EIN 043582388 · Headquarters: WEST BARNSTABLE, MA, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  10. Oreo - Oceanic Resources Environmental Organization

    EIN 995072632 · Headquarters: Fletcher, NC, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  11. Organic Edibles Las Vegas Inc

    EIN 272774657 · Headquarters: Las Vegas, NV, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  12. Organic Gardening & Art Foundation

    EIN 843696875 · Headquarters: ROSEMEAD, CA, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  13. Organic Grassfed Beef Coalition

    EIN 204985262 · Headquarters: VERMILLION, SD, US · Environment · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  14. Organic Growth Regenerative Ecosystems Inc

    EIN 880611478 · Headquarters: Limestone, TN, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  15. Organic Materials Review Institute

    EIN 931228509 · Headquarters: EUGENE, OR, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  16. Organic Sunflower Foundation

    EIN 943229055 · Headquarters: FOX ISLAND, WA, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  17. Organics for All Inc

    EIN 711028948 · Headquarters: Arvonia, VA, US · Environment · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  18. Organisation Des Veterans De La Marine Hatienne

    EIN 834522446 · Headquarters: North Miami, FL, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  19. Organizacion Pro Ambiente Sustentable Inc

    EIN 660672254 · Headquarters: San Juan, PR, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  20. Organization for Active Social Impact and Sustainability Inc

    EIN 853562849 · Headquarters: Miami, FL, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  21. Organization for Sustainable Communities

    EIN 814340717 · Headquarters: Austin, TX, US · Environment · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  22. Organization for the Advancement of Underprivileged Societies

    EIN 453963547 · Headquarters: Tukwila, WA, US · Environment · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  23. Organization for Watershed Living

    EIN 300037825 · Headquarters: Linneus, ME, US · Environment · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  24. Organization of Aggie Students Inspiring Sustainability

    EIN 454663658 · Headquarters: LAS CRUCES, NM, US · Environment · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  25. Organization of Agreement States

    EIN 900100282 · Headquarters: Herndon, VA, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  26. Organization of Clean Energy and Climate Inc

    EIN 880712679 · Headquarters: NEWTON, MA, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  27. Organization of Fire Contractors and Affiliates

    EIN 881706871 · Headquarters: EUGENE, OR, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  28. Organization of Fish & Wildlife Information Managers

    EIN 481170553 · Headquarters: Phoenix, AZ, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  29. Organization of Nature Evolutionaries Inc

    EIN 352525611 · Headquarters: DANBY, VT, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  30. Organization of Regional Coastal Activists

    EIN 200051282 · Headquarters: Malibu, CA, US · Environment · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  31. Organization Towards Agricultural Preservation

    EIN 932288036 · Headquarters: Alamo, CA, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  32. Origin Expeditions

    EIN 833788001 · Headquarters: Ada, MI, US · Environment · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  33. Original Kaskaskia Area Wilderness Inc

    EIN 364149908 · Headquarters: Okawville, IL, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  34. Origins Surveys

    EIN 330436605 · Headquarters: Chandler, AZ, US · Environment · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  35. Orinda Garden Club

    EIN 942725254 · Headquarters: Orinda, CA, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  36. Orion Energy Inc

    EIN 612000111 · Headquarters: GLENDALE, CA, US · Environment · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  37. Orion the Hunters Institute

    EIN 364053004 · Headquarters: Helena, MT, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  38. Orland Park Open Lands Corporation

    EIN 364072263 · Headquarters: Orland Park, IL, USA · Environment · Latest available filing year: 2020 · Primary form: IRS Form 990

  39. Orland Queen Bee Capital Organization

    EIN 883715123 · Headquarters: Orland, CA, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  40. Orlando Land Trust Inc

    EIN 843379161 · Headquarters: Orlando, FL, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  41. Orleans Can

    EIN 320396622 · Headquarters: East Orleans, MA, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  42. Orleans Conservation Trust

    EIN 237418072 · Headquarters: ORLEANS, MA, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  43. Orleans Improvement Association Inc

    EIN 311598849 · Headquarters: ORLEANS, MA, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  44. Orleans Land Restoration Corporation

    EIN 205095504 · Headquarters: ALBION, NY, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  45. Orleans Pond Coalition Inc

    EIN 141882175 · Headquarters: ORLEANS, MA, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  46. Ormond Beach Observers Inc

    EIN 870765677 · Headquarters: Port Hueneme, CA, US · Environment · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  47. Ormond Scenic Loop and Trail Corridor Management Entity Inc

    EIN 383764144 · Headquarters: Ormond Beach, FL, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  48. Ornamental Horticulture Council

    EIN 562541810 · Headquarters: Augusta, ME, US · Environment · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  49. Oroville Botanic Garden and Educational Center

    EIN 814853232 · Headquarters: Oroville, CA, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  50. Orphan Well Project Ltd

    EIN 843106135 · Headquarters: Thornton, CO, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  51. Orton Botanical Garden Inc

    EIN 474179724 · Headquarters: TWIN FALLS, ID, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  52. Orville Schell Farms Wildlife Preserve

    EIN 990396591 · Headquarters: BOLINAS, CA, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  53. Os Ocean Sea Foundation Inc

    EIN 301173625 · Headquarters: MILTON, DE, US · Environment · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  54. Os Orchids Society

    EIN 830365685 · Headquarters: Warwick, RI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  55. Osa Trail Alliance Corporation

    EIN 394329740 · Headquarters: Jupiter, FL, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  56. Osage Conservation Club

    EIN 426081192 · Headquarters: Osage, IA, US · Environment · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  57. Osage County Conservation Foundation

    EIN 731405749 · Headquarters: PAWHUSKA, OK, US · Environment · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  58. Osage Lakes Greenway Corporation

    EIN 462293264 · Headquarters: WARSAW, MO, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  59. Osage Valley Resource Conservation

    EIN 431610664 · Headquarters: CLINTON, MO, USA · Environment · Latest available filing year: 2011 · Primary form: IRS Form 990-EZ

  60. Osakis Lake Association Inc

    EIN 912038728 · Headquarters: OSAKIS, MN, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  61. Oscoda Citizens for Clean Water

    EIN 844488700 · Headquarters: OSCODA, MI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  62. Osda Yona Environmental School and Research Center Inc

    EIN 611904186 · Headquarters: Dahlonega, GA, US · Environment · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  63. Oseas Conservation Foundation Inc

    EIN 465546130 · Headquarters: RIDGEFIELD, CT, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  64. Oskaloosa Trees Forever

    EIN 471819704 · Headquarters: Oskaloosa, IA, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  65. Ospirg Foundation Inc

    EIN 931150763 · Headquarters: PORTLAND, OR, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  66. Osprey Lake Property Owners Association

    EIN 263298438 · Headquarters: Hayward, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  67. Osprey Wilds Environmental Learning Center

    EIN 237044164 · Headquarters: SANDSTONE, MN, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  68. Oss Project Inc

    EIN 823552775 · Headquarters: Brooklyn, NY, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  69. Ossef Inc

    EIN 263607946 · Headquarters: DEMING, NM, US · Environment · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  70. Osseo Conservation Club

    EIN 410942184 · Headquarters: Anoka, MN, US · Environment · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  71. Ossipee Garden Club

    EIN 510584532 · Headquarters: Ossipee, NH, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  72. Ossipee Lake Alliance Inc

    EIN 383668409 · Headquarters: Freedom, NH, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  73. Osterville Garden Club Inc

    EIN 237119589 · Headquarters: OSTERVILLE, MA, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  74. Osterville Historic Places Conservation Trust

    EIN 042751016 · Headquarters: RICHMOND, VA, USA · Environment · Latest available filing year: 2013 · Primary form: IRS Form 990-PF

  75. Ostrander Park Restoration Foundation

    EIN 272947589 · Headquarters: Oakland, CA, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  76. Oswego Garden Club

    EIN 831715126 · Headquarters: Lake Oswego, OR, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  77. Oswego Lake Watershed Council

    EIN 275081779 · Headquarters: Lake Oswego, OR, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  78. Oswego Maritime Foundation Inc

    EIN 222330759 · Headquarters: Oswego, NY, US · Environment · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  79. Other Side of the Tracks Inc

    EIN 934467393 · Headquarters: Gordon, GA, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  80. Otisco Lake Preservation Association

    EIN 264486719 · Headquarters: Marietta, NY, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  81. Otoe County Wildlife Club C/o Sean Petersen

    EIN 476033838 · Headquarters: NEBRASKA CITY, NE, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  82. Otsego County Conservation Association Inc

    EIN 237250655 · Headquarters: COOPERSTOWN, NY, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  83. Otsego County Economic Alliance Inc

    EIN 383617810 · Headquarters: GAYLORD, MI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  84. Otsego Lake Association

    EIN 381453677 · Headquarters: GAYLORD, MI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  85. Otsego Lake Association

    EIN 571139199 · Headquarters: Springfield Center, NY, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  86. Otsego Land Trust

    EIN 133499394 · Headquarters: COOPERSTOWN, NY, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  87. Otsego Wildlife Legacy Society Inc

    EIN 383303103 · Headquarters: GAYLORD, MI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  88. Ottawa River Coalition

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

  89. Ottawa River Kleanup Association Inc

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

  90. Otter Lake Booster Club Inc

    EIN 800443204 · Headquarters: Stanley, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  91. Otter Lake Conservation Society Inc

    EIN 933075948 · Headquarters: HANSON, KY, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  92. Otter Pond Protective Association

    EIN 452927491 · Headquarters: Georges Mills, NH, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  93. Otter Tail County Cola

    EIN 411978982 · Headquarters: Fargo, ND, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  94. Ouabache Land Conservancy Inc

    EIN 800334071 · Headquarters: Terre Haute, IN, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  95. Ouachita Green

    EIN 272027811 · Headquarters: WEST MONROE, LA, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  96. Ouachita Mountains Biological Station

    EIN 710821529 · Headquarters: Shreveport, LA, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  97. Ouachita Mountains Resource Conservation & Development

    EIN 731312122 · Headquarters: Poteau, OK, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  98. Ouachita Riverkeeper Inc

    EIN 208533247 · Headquarters: Monroe, LA, US · Environment · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  99. Our American Lands

    EIN 994667897 · Headquarters: ANTONITO, CO, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  100. Our Beautiful Carters Lake Inc

    EIN 922572655 · Headquarters: CHATSWORTH, GA, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

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