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. 2050 Hawaii Inc

    EIN 834475370 · Headquarters: KAPOLEI, HI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  2. 3T Foundation

    EIN 384264960 · Headquarters: Naalehu, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  3. 4 Ag Hawaii Inc

    EIN 271373697 · Headquarters: Anahola, HI, US · Environment · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  4. 808 Cleanups

    EIN 473528201 · Headquarters: HONOLULU, HI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  5. 808 Youth Rising

    EIN 845084488 · Headquarters: Kahuku, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  6. A Little Green

    EIN 475389450 · Headquarters: HAWI, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  7. Agroforestry Net Inc

    EIN 830347673 · Headquarters: Holualoa, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. Ahaaina

    EIN 933467873 · Headquarters: Kapaau, HI, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  9. Ahahui Malama I Ka Lokahi

    EIN 990327326 · Headquarters: KAILUA, HI, USA · Environment · Latest available filing year: 2019 · Primary form: IRS Form 990-EZ

  10. Aina Hoola Initiative

    EIN 874385352 · Headquarters: HILO, HI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  11. Aina Institute

    EIN 990292121 · Headquarters: Kailua, HI, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  12. Aina Momona

    EIN 821366588 · Headquarters: KAUNAKAKAI, HI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  13. Aina Wellness Academy Inc

    EIN 871963860 · Headquarters: Honolulu, HI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  14. Akaka Foundation for Tropical Forests

    EIN 464119442 · Headquarters: HILO, HI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  15. Akoakoa Foundation Inc

    EIN 874770465 · Headquarters: Kailua Kona, HI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  16. Ala Kahakai Trail Association

    EIN 271398470 · Headquarters: Kamuela, HI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  17. Ala Wai Watershed Association Inc

    EIN 990353294 · Headquarters: HONOLULU, HI, US · Environment · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  18. Aloha Makena Foundation Inc

    EIN 843807332 · Headquarters: KIHEI, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  19. Aloha Ocean Plus

    EIN 852243668 · Headquarters: Honolulu, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  20. Aloha Puu Kukui

    EIN 992785743 · Headquarters: LAHAINA, HI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  21. Aloha Tree Alliance

    EIN 870994075 · Headquarters: HONOLULU, HI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  22. Amama Foundation

    EIN 824869305 · Headquarters: WAIKOLOA, HI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  23. American Rhododendron Society

    EIN 990333735 · Headquarters: Keaau, HI, US · Environment · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  24. Andeerian

    EIN 923541683 · Headquarters: Honolulu, HI, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  25. Aoao O Na Loko I'a O Maui

    EIN 943283529 · Headquarters: KIHEI, HI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  26. Asta-ja USA

    EIN 825338063 · Headquarters: Honolulu, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  27. Aumaka Hilea

    EIN 332920565 · Headquarters: Mountain View, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  28. Babuhawaii Foundation

    EIN 833142991 · Headquarters: HONOLULU, HI, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  29. Beach Environmental Awareness Campaign Hawaii

    EIN 800182443 · Headquarters: HONOLULU, HI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  30. Better Block Hawaii

    EIN 465023472 · Headquarters: HONOLULU, HI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  31. Big Island Rc&d

    EIN 990279188 · Headquarters: HILO, HI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  32. Bio Bamboo Inc

    EIN 273984497 · Headquarters: HAIKU, HI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  33. Blue Ala Wai Canal Foundation

    EIN 932072196 · Headquarters: HONOLULU, HI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  34. Blue Ocean Warriors

    EIN 881670486 · Headquarters: Honolulu, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  35. Blue Planet Foundation

    EIN 208247917 · Headquarters: HONOLULU, HI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  36. Breath of Heaven Sustainable Living Center

    EIN 611579417 · Headquarters: WAILUKU, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  37. Butterly Society of Hawaii

    EIN 204147197 · Headquarters: HONOLULU, HI, US · Environment · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  38. Cactus & Succulent Society of Hawaii

    EIN 991847919 · Headquarters: Pearl City, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  39. Castiglione A Casauria Foundation

    EIN 943275970 · Headquarters: Honolulu, HI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  40. Cave Conservancy of Hawaii

    EIN 562286339 · Headquarters: Ocean View, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  41. Center for Ocean Studies

    EIN 264560961 · Headquarters: lihue, HI, US · Environment · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  42. Clean Water Initiative Inc

    EIN 334196630 · Headquarters: Honolulu, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  43. Climate Concerns Corp

    EIN 473916161 · Headquarters: Honolulu, HI, US · Environment · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  44. Coherence Lab

    EIN 474348638 · Headquarters: Kapaa, HI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  45. Community Work Day Program

    EIN 990259857 · Headquarters: PUUNENE, HI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  46. Companions of Art and Nature Inc

    EIN 133469818 · Headquarters: Lahaina, HI, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  47. Conservation Council for Hawaii

    EIN 990199211 · Headquarters: HONOLULU, HI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  48. Conservation Mind

    EIN 394635446 · Headquarters: Honolulu, HI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  49. Coral Reef Education Institute

    EIN 842008942 · Headquarters: Kailua Kona, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  50. Dahangloose Corporation

    EIN 843445056 · Headquarters: Lahaina, HI, USA · Environment · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ

  51. Dana Anne Yee Foundation

    EIN 475472442 · Headquarters: Honolulu, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  52. Debolt Gardens Foundation

    EIN 800352117 · Headquarters: MAKAWAO, HI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  53. Developing World Solar

    EIN 990343317 · Headquarters: HONOLULU, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  54. Dragonfly Ranch Educational Center

    EIN 834168672 · Headquarters: HONAUNAU, HI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  55. E Kupaku Ka Aina - the Hawaii Land Restoration Institute

    EIN 470949681 · Headquarters: WAILUKU, HI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  56. Earthrm Inc

    EIN 331439918 · Headquarters: Hilo, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  57. East Hawaii Island Master Gardener Association

    EIN 901023530 · Headquarters: Hilo, HI, US · Environment · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  58. East Maui Land Restoration

    EIN 994279178 · Headquarters: Haiku, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  59. Ecological Informatics Inc

    EIN 990350161 · Headquarters: Honolulu, HI, US · Environment · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  60. Ecotipping Points Project

    EIN 352348578 · Headquarters: Kailua, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  61. Envirowatch Inc

    EIN 990333072 · Headquarters: Mililani, HI, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  62. Exceptional Trees International

    EIN 412516400 · Headquarters: Honolulu, HI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  63. Find a Spring Foundation

    EIN 851864127 · Headquarters: KILAUEA, HI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  64. Friends of Amy B H Greenwell Ethnobotanical Garden

    EIN 812793124 · Headquarters: CAPTAIN COOK, HI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  65. Friends of Auwahi Forest Restoration Project

    EIN 870700795 · Headquarters: Makawao, HI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  66. Friends of Hakalau Forest National Wildlife Refuge

    EIN 680634915 · Headquarters: HILO, HI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  67. Friends of Haleakala National Park Inc

    EIN 990330457 · Headquarters: Makawao, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  68. Friends of Hawaiian Islands National Wildlife Refuge

    EIN 471778045 · Headquarters: Honolulu, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  69. Friends of Hawaiis Urban Forest

    EIN 311648023 · Headquarters: KAILUA, HI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  70. Friends of Historic Banyan Drive

    EIN 882374304 · Headquarters: Hilo, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  71. Friends of Honolulu Botanical Gardens

    EIN 990107937 · Headquarters: HONOLULU, HI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  72. Friends of Kewalo

    EIN 271548469 · Headquarters: Honolulu, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  73. Friends of Liliuokalani Gardens

    EIN 461992898 · Headquarters: Hilo, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  74. Friends of Maha'ulepu

    EIN 472596342 · Headquarters: KOLOA, HI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  75. Friends of Molokini

    EIN 920785119 · Headquarters: KIHEI, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  76. Friends of Nelha

    EIN 010575126 · Headquarters: KAILUA KONA, HI, USA · Environment · Latest available filing year: 2021 · Primary form: IRS Form 990-EZ

  77. Friends of Ohikiloio Na Kiai No Kanehunamoku

    EIN 822900583 · Headquarters: Waianae, HI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  78. Friends of Pacific Marine Sanctuari Es

    EIN 412906448 · Headquarters: Kihei, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  79. Friends of Tantalus

    EIN 331085269 · Headquarters: Honolulu, HI, US · Environment · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  80. Friends of the National Parks Trust of the Virgin Islands Uk

    EIN 844717078 · Headquarters: Honolulu, HI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  81. Friends of Twin Falls Maui

    EIN 873757738 · Headquarters: Haiku, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  82. Friends of Waimanalo

    EIN 843342567 · Headquarters: Waimanalo, HI, US · Environment · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  83. Gaia Pacific Center

    EIN 264116881 · Headquarters: HONOLULU, HI, US · Environment · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  84. Gap Foundation

    EIN 923853002 · Headquarters: Ewa Beach, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  85. Garden Island Resource Conservation and Development Inc

    EIN 990288553 · Headquarters: LIHUE, HI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  86. Global Change Fund

    EIN 833359755 · Headquarters: Honolulu, HI, US · Environment · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  87. Global Conservation Alliance

    EIN 262738902 · Headquarters: Haleiwa, HI, US · Environment · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  88. Global Ecology Foundation

    EIN 453503202 · Headquarters: Hilo, HI, US · Environment · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  89. Global Preservation Initiative Inc

    EIN 874680143 · Headquarters: Honolulu, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  90. Green Team

    EIN 823871143 · Headquarters: Honolulu, HI, US · Environment · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  91. Green Thumb Garden Club

    EIN 010964641 · Headquarters: EWA Beach, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  92. Greenlandoceanblue

    EIN 800402523 · Headquarters: Mililiani, HI, US · Environment · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  93. Greenswell

    EIN 921052573 · Headquarters: Makawao, HI, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  94. Growing One Future

    EIN 993706110 · Headquarters: Keaau, HI, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  95. Hafaadai Farm

    EIN 920665119 · Headquarters: Mountain View, HI, US · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  96. Hakalau Point Preservation Association

    EIN 812712093 · Headquarters: Hakalau, HI, US · Environment · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  97. Halama Street Beach Restoration Inc

    EIN 842672864 · Headquarters: HONOLULU, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  98. Haleakala Conservancy Inc

    EIN 834385727 · Headquarters: PUKALANI, HI, USA · Environment · Latest available filing year: 2022 · Primary form: IRS Form 990

  99. Hamakua Group

    EIN 873716275 · Headquarters: Kailua, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  100. Hanai Kaiaulu

    EIN 853784661 · Headquarters: WAIANAE, HI, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

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