Environment nonprofits in Hawaii

Environment nonprofits in Hawaii. Browse 471 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. Hanalei Watershed Hui

    EIN 161628674 · Headquarters: HANALEI, HI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  2. Hawai'i Forest Institute

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

  3. Hawaii - American Nurses Association Foundation

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

  4. 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

  5. Hawaii Audubon Society

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

  6. Hawaii Big Game Fishing Club

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

  7. Hawaii Biofuels Foundation

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

  8. Hawaii Butterfly Garden

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

  9. Hawaii Community Land Trust

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

  10. Hawaii Conservation Alliance Foundation

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

  11. Hawaii Coral Reef and Garden Foundation

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

  12. Hawaii Ecotourism Association

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

  13. Hawaii Electric Vehicle Association

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

  14. Hawaii Environmental Health Association

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

  15. Hawaii Environmental Restoration

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

  16. Hawaii Fishing & Boating Association

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

  17. Hawaii Institute of Pacific Agriculture

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

  18. 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

  19. Hawaii Kai Orchid Society

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

  20. Hawaii Loa Ridge Preserve

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

  21. Hawaii Marine Education and Research Center

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

  22. Hawaii Nature Center Inc

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

  23. Hawaii Nature Hui

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

  24. Hawaii Ocean Watch

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

  25. 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

  26. Hawaii Pet and Wildlife Society

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

  27. Hawaii Pv Coalition

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

  28. Hawaii Rural Water Association

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

  29. Hawaii Sakura Foundation

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

  30. Hawaii Seafood Council

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

  31. Hawaii Society of Urban Forestry Professionals

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

  32. Hawaii Tropical Botanical Garden

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

  33. 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

  34. Hawaii Uncharted Research Collective

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

  35. Hawaii Unites

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

  36. Hawaii Water Environment Association

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

  37. Hawaii Wildfire Management Organization

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

  38. Hawaii Wildlife Fund

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

  39. Hawaii Yacht Club Maritime Foundation

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

  40. Hawaii Youth Climate Coalition

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

  41. Hawaii's Plantation Village

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

  42. Hawaiian Honey Bees

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

  43. Hawaiian Islands Conservation Collective

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

  44. Hawaiian Islands Land Trust

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

  45. Hawaiian Legacy Reforestation Initiative

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

  46. Hawaiian Reforestation Program

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

  47. Hawaiian Sanctuary Inc

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

  48. Hawaiian Trail & Mountain Corporation

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

  49. Hawaiis Lifeguard & Water Safety Fund

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

  50. Healthy Climate Communities

    EIN 814031776 · Headquarters: Kailua, HI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  51. Hele Mua Inc

    EIN 934597691 · Headquarters: Honolulu, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  52. Helekunihi Cultural Foundation

    EIN 203327146 · Headquarters: Makawao, HI, US · Environment · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  53. Henry K Lindsey Foundation

    EIN 721528669 · Headquarters: Hilo, HI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  54. Hi'ilei Aloha LLC

    EIN 261210564 · Headquarters: Haleiwa, HI, USA · Environment · Latest available filing year: 2021 · Primary form: IRS Form 990

  55. Hi'ipaka LLC

    EIN 261537168 · Headquarters: Haleiwa, HI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  56. Hiki Ola

    EIN 832838760 · Headquarters: KEALAKEKUA, HI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  57. Hilo Orchid Society Inc

    EIN 990236744 · Headquarters: Hilo, HI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  58. Ho Olokahi Pollinating Gardens

    EIN 862167279 · Headquarters: KAPAA, HI, US · Environment · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  59. Hoala Kealakekua

    EIN 824995066 · Headquarters: Captain Cook, HI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  60. Hoala Kealakekua Nui Inc

    EIN 922000424 · Headquarters: KEALAKEKUA, HI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  61. Hoi Hoi Ea

    EIN 462982441 · Headquarters: Kaneohe, HI, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  62. Hokupa A Foundation Incorporated

    EIN 394755916 · Headquarters: HONOLULU, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  63. Holistic Environmental Stewardship Foundation Inc

    EIN 462477539 · Headquarters: Pahoa, HI, US · Environment · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  64. Honolulu Orchid Society Inc

    EIN 996008857 · Headquarters: Honolulu, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  65. Honolulu Umisakura

    EIN 815284154 · Headquarters: HONOLULU, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  66. Honouliwai Ola

    EIN 311689252 · Headquarters: Kaunakakai, HI, US · Environment · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  67. Honua Kai-west Maui Comm Benefit Fund Inc

    EIN 263584058 · Headquarters: LAHAINA, HI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  68. Hoola Aina O Kula

    EIN 874454254 · Headquarters: KULA, HI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  69. Hoomalu Ke Kai

    EIN 863570359 · Headquarters: Lawai, HI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  70. Hoomau Ranch Conservancy

    EIN 822037512 · Headquarters: HONOLULU, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  71. Hua Aina O Honaunau

    EIN 834099921 · Headquarters: Kealakekua, HI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  72. Hui Aloha Puukapu

    EIN 872611810 · Headquarters: KAMUELA, HI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  73. Hui Ho Olako for Hawaiian Initiatives

    EIN 834150455 · Headquarters: Hilo, HI, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  74. Hui Kahuwai

    EIN 931834642 · Headquarters: Kailua Kona, HI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  75. Hui Laulima O Kehaha Kai

    EIN 383677165 · Headquarters: Kailua Kona, HI, US · Environment · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  76. Hui Mahiai Aina

    EIN 822039190 · Headquarters: Waimanalo, HI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  77. Hui Maka Ainana O Makana

    EIN 990344133 · Headquarters: Hanalei, HI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  78. Hui Nehu

    EIN 932016756 · Headquarters: Kihei, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  79. Hui O Koolaupoko

    EIN 261760086 · Headquarters: Kailua, HI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  80. Hui O Na Wai Eha

    EIN 300338130 · Headquarters: Wailuku, HI, US · Environment · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  81. Hui Okika O Kunia

    EIN 800457580 · Headquarters: Mililani, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  82. Huli Hawaii Inc

    EIN 831269957 · Headquarters: Honolulu, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  83. Huliauapaa

    EIN 455486637 · Headquarters: HAKALAU, HI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  84. I Nui Ke Aho

    EIN 823207505 · Headquarters: Waialua, HI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  85. I Ola Wailuanui Inc

    EIN 612064836 · Headquarters: KAPAA, HI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  86. Iewe Hanau O Ka Aina

    EIN 993547218 · Headquarters: Naalehu, HI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  87. Ike Lawaia

    EIN 992063808 · Headquarters: Captain Cook, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  88. Ikena Ecosystens

    EIN 932539372 · Headquarters: Kaneohe, HI, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  89. Ikenobo Ikebana Society Honolulu Hawaii Chapter

    EIN 800226242 · Headquarters: waipahu, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  90. Imua Conservation Organization

    EIN 932309607 · Headquarters: Kapaa, HI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  91. Indo-pacific Conservation Alliance

    EIN 522139780 · Headquarters: Honolulu, HI, US · Environment · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  92. Institute for Climate and Peace

    EIN 831440386 · Headquarters: HONOLULU, HI, USA · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990

  93. Integrated Agriculture Network

    EIN 562423518 · Headquarters: Laupahoehoe, HI, US · Environment · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  94. International Rainwater Catchment System Association

    EIN 990351008 · Headquarters: Hilo, HI, US · Environment · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  95. Iole

    EIN 874120818 · Headquarters: HONOLULU, HI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  96. Japan Hawaii Wedding Association

    EIN 814538097 · Headquarters: HONOLULU, HI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  97. John T Waterhouse Te Co-tr Tropical

    EIN 996048710 · Headquarters: HONOLULU, HI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  98. Jungle to Jungle

    EIN 270178960 · Headquarters: PAIA, HI, US · Environment · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  99. Ka Ha O Ka Aina

    EIN 810677153 · Headquarters: HAWI, HI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  100. Ka Ike O Ka Aina

    EIN 912173407 · Headquarters: Kurtistown, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

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