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. Harvard Conservation Trust

    EIN 237305157 · Headquarters: HARVARD, MA, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  2. Harvest Eco Salvage

    EIN 814731530 · Headquarters: SCOTTSDALE, AZ, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  3. Harvest of All First Nations

    EIN 883183155 · Headquarters: BOULDER, CO, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  4. Harvesting Hope of Florida Inc

    EIN 392159293 · Headquarters: winter springs, FL, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  5. Harvey Lake Association

    EIN 810630176 · Headquarters: Northwood, NH, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  6. Harwell Hamilton Harris Fellowship Parkway Conservancy Inc

    EIN 841949844 · Headquarters: Pasadena, CA, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  7. Harwich Conservation Trust

    EIN 046599166 · Headquarters: SOUTH HARWICH, MA, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  8. Harwich Ponds Coalition Inc

    EIN 994809108 · Headquarters: Harwich, MA, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  9. Hasbrook Lake Association Inc

    EIN 391767651 · Headquarters: LAKE TOMAHAWK, WI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  10. Hashers Not Trashers

    EIN 844004352 · Headquarters: Tucson, AZ, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  11. Hastings Downtown Business Association

    EIN 842283406 · Headquarters: Hastings, MN, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  12. Hastings Environmental Protectors

    EIN 562528127 · Headquarters: Hastings, MN, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  13. Hatch Bradley Brook Lakes Assn

    EIN 455105196 · Headquarters: West Eaton, NY, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  14. Hatch Lake Association

    EIN 391624492 · Headquarters: Iola, WI, US · Environment · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  15. Hatch Lake Iola Wi Association

    EIN 831468355 · Headquarters: MENOMONEE FALLS, WI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  16. Hatcher Garden and Woodland Preserve In

    EIN 571069038 · Headquarters: SPARTANBURG, SC, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  17. Hatchie River Conservancy

    EIN 934826403 · Headquarters: Brownsville, TN, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  18. Hatteras Island Ocean Center Inc

    EIN 453652929 · Headquarters: Hatteras, NC, USA · Environment · Latest available filing year: 2015 · Primary form: IRS Form 990

  19. Hauser Lake Watershed Coalition

    EIN 202290031 · Headquarters: Hauser, ID, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  20. Hausman Foundation for the Environment

    EIN 542041473 · Headquarters: McLean, VA, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  21. Havana Garden Club Inc

    EIN 822071417 · Headquarters: Havana, FL, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  22. Havasu Riviera Trail Coalition

    EIN 922715216 · Headquarters: LAKE HAVASU CITY, AZ, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  23. Havelock Garden Club

    EIN 561464491 · Headquarters: havelock, NC, US · Environment · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  24. Haven & Earth Llc

    EIN 831175781 · Headquarters: FORT WORTH, TX, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  25. Haven Lake Conservancy

    EIN 010952293 · Headquarters: MOUNT SHASTA, CA, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  26. Havenn House Sj

    EIN 931903585 · Headquarters: BRIDGETON, NJ, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  27. Havens Harvest Inc

    EIN 850627932 · Headquarters: New Haven, CT, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  28. Having Kids

    EIN 371731899 · Headquarters: Tucson, AZ, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  29. Haw River Assembly Inc

    EIN 581510282 · Headquarters: BYNUM, NC, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  30. Hawai'i Forest Institute

    EIN 900108457 · Headquarters: Honolulu, HI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  31. Hawaii - American Nurses Association Foundation

    EIN 920451539 · Headquarters: Honolulu, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  32. Hawaii Association for Marine Education and Research Inc

    EIN 331091609 · Headquarters: Lahaina, HI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  33. Hawaii Audubon Society

    EIN 996006829 · Headquarters: HONOLULU, HI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  34. Hawaii Big Game Fishing Club

    EIN 990317614 · Headquarters: Kailua Kona, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  35. Hawaii Biofuels Foundation

    EIN 010962253 · Headquarters: HONOLULU, HI, US · Environment · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  36. Hawaii Butterfly Garden

    EIN 851085147 · Headquarters: ANAHOLA, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  37. Hawaii Community Land Trust

    EIN 208290983 · Headquarters: Kailua, HI, US · Environment · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  38. Hawaii Conservation Alliance Foundation

    EIN 205591648 · Headquarters: HONOLULU, HI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  39. Hawaii Coral Reef and Garden Foundation

    EIN 843451923 · Headquarters: Honolulu, HI, US · Environment · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  40. Hawaii Ecotourism Association

    EIN 990321160 · Headquarters: Kahului, HI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  41. Hawaii Electric Vehicle Association

    EIN 992178734 · Headquarters: HILO, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  42. Hawaii Environmental Health Association

    EIN 990353052 · Headquarters: Honolulu, HI, US · Environment · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  43. Hawaii Environmental Restoration

    EIN 833178395 · Headquarters: Pahoa, HI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  44. Hawaii Fishing & Boating Association

    EIN 261089757 · Headquarters: KAILUA KONA, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  45. Hawaii Institute of Pacific Agriculture

    EIN 452534694 · Headquarters: KAPAAU, HI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  46. Hawaii Island Land Trust Malama Ka Aina Pulama Na Mea Oiwi

    EIN 912157625 · Headquarters: Wailuku, HI, US · Environment · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  47. Hawaii Kai Orchid Society

    EIN 990244823 · Headquarters: Honolulu, HI, US · Environment · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  48. Hawaii Loa Ridge Preserve

    EIN 815354028 · Headquarters: HONOLULU, HI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  49. Hawaii Marine Education and Research Center

    EIN 821614744 · Headquarters: VOLCANO, HI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  50. Hawaii Nature Center Inc

    EIN 990208246 · Headquarters: HONOLULU, HI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  51. Hawaii Nature Hui

    EIN 460848019 · Headquarters: Honolulu, HI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  52. Hawaii Ocean Watch

    EIN 475069726 · Headquarters: Kailua Kona, HI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  53. Hawaii Pacific Parks Association Ltd Fka Hi Natural History Association Ltd

    EIN 996000894 · Headquarters: HAWAII NATIONAL PARK, HI, USA · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990

  54. Hawaii Pet and Wildlife Society

    EIN 464338377 · Headquarters: HONOLULU, HI, US · Environment · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  55. Hawaii Pv Coalition

    EIN 562606127 · Headquarters: Makawao, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  56. Hawaii Rural Water Association

    EIN 270711752 · Headquarters: WAIKOLOA, HI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  57. Hawaii Sakura Foundation

    EIN 822709873 · Headquarters: HONOLULU, HI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  58. Hawaii Seafood Council

    EIN 260613665 · Headquarters: Honolulu, HI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  59. Hawaii Society of Urban Forestry Professionals

    EIN 201844197 · Headquarters: Honolulu, HI, US · Environment · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  60. Hawaii Tropical Botanical Garden

    EIN 990185842 · Headquarters: PAPAIKOU, HI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  61. Hawaii Tropical Flower & Foliage Association Kauai Chapter Inc

    EIN 990266005 · Headquarters: Kapaa, HI, US · Environment · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  62. Hawaii Uncharted Research Collective

    EIN 822863355 · Headquarters: Haiku, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  63. Hawaii Unites

    EIN 921615438 · Headquarters: Kihei, HI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  64. Hawaii Water Environment Association

    EIN 990298151 · Headquarters: Honolulu, HI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  65. Hawaii Wildfire Management Organization

    EIN 651185517 · Headquarters: KAMUELA, HI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  66. Hawaii Wildlife Fund

    EIN 990326669 · Headquarters: PAIA, HI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  67. Hawaii Yacht Club Maritime Foundation

    EIN 460571169 · Headquarters: HONOLULU, HI, US · Environment · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  68. Hawaii Youth Climate Coalition

    EIN 843760319 · Headquarters: Honolulu, HI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  69. Hawaii's Plantation Village

    EIN 237381472 · Headquarters: Waipahu, HI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  70. Hawaiian Honey Bees

    EIN 831068253 · Headquarters: KANEOHE, HI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  71. Hawaiian Islands Conservation Collective

    EIN 853857190 · Headquarters: Kailua, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  72. Hawaiian Islands Land Trust

    EIN 990353223 · Headquarters: HONOLULU, HI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  73. Hawaiian Legacy Reforestation Initiative

    EIN 465002476 · Headquarters: HONOLULU, HI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  74. Hawaiian Reforestation Program

    EIN 990318925 · Headquarters: Pepeekeo, HI, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  75. Hawaiian Sanctuary Inc

    EIN 263882497 · Headquarters: PAHOA, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  76. Hawaiian Silversword Foundation

    EIN 860879183 · Headquarters: TUCSON, AZ, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  77. Hawaiian Trail & Mountain Corporation

    EIN 831574485 · Headquarters: Waimanalo, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  78. Hawaiis Lifeguard & Water Safety Fund

    EIN 204561075 · Headquarters: KAPOLEI, HI, US · Environment · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  79. Hawk Talk Inc

    EIN 582099672 · Headquarters: Canton, GA, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  80. Hawkeye Conservationists Inc

    EIN 237442257 · Headquarters: PLATTSBURGH, NY, US · Environment · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  81. Hawkeye Point Foundation

    EIN 262608190 · Headquarters: Sibley, IA, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  82. Hawkins County Master Gardener Assoc

    EIN 475467643 · Headquarters: Rogersville, TN, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  83. Hawks View Group

    EIN 571201396 · Headquarters: Carlsbad, CA, US · Environment · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  84. Hawksbill Research Institute

    EIN 863274887 · Headquarters: McLean, VA, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  85. Hawley Hamlet Neighborhood Garden Inc

    EIN 991981800 · Headquarters: Lincoln, NE, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  86. Hay Creek Watershed Association

    EIN 300144293 · Headquarters: Geigertown, PA, US · Environment · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  87. Hayden Island Community Safety Initiative Inc

    EIN 872356216 · Headquarters: Portland, OR, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  88. Hayden Lake Watershed Association

    EIN 861130379 · Headquarters: Hayden, ID, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  89. Hayes Pond Community Assoc Inc

    EIN 042738706 · Headquarters: Otis, MA, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  90. Haynes Watershed Foundation

    EIN 874077890 · Headquarters: CONYERS, GA, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  91. Hays County Master Naturalists

    EIN 141837273 · Headquarters: Wimberley, TX, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  92. Hayward Area Planning Association

    EIN 900248921 · Headquarters: Hayward, CA, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  93. Hayward Community Gardens

    EIN 942440240 · Headquarters: HAYWARD, CA, US · Environment · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  94. Haywood Waterways Association Inc

    EIN 562108874 · Headquarters: WAYNESVILLE, NC, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  95. Hazardous Materials and Environmental Awareness

    EIN 300793625 · Headquarters: LAKE ELMO, MN, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  96. Hazelwood Green Property Owners Association

    EIN 991609037 · Headquarters: PITTSBURGH, PA, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  97. Hazelwood Heights Water Association

    EIN 910904053 · Headquarters: Auburn, WA, US · Environment · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  98. Hazens Notch Conservation Trust Inc

    EIN 384222936 · Headquarters: Montgomery Ctr, VT, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  99. Hazleton Veterans Park

    EIN 271089259 · Headquarters: Oelwein, IA, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  100. Hd Franklin- El Foundation

    EIN 871883164 · Headquarters: Petoskey, MI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

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