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Data / Nonprofits / Hawaii / Environment

Environment nonprofits in Hawaii: 396 registered with the IRS

396 environment nonprofits are registered with the IRS in Hawaii, 386 of them 501(c)(3) charities; the 155 that report revenue took in $149.7 million. The most are in Honolulu (107), Lahaina (18), Hilo (16). The largest by revenue: Elemental Excelerator Inc ($34.1 million), Hiipaka LLC ($12.4 million), Hawaiian Islands Land Trust ($5.6 million).

SpecStream is the live web data engine for teams and agents. It reads the IRS register of exempt organizations as the IRS updates it, and this page is that reading. Ask for the nonprofits you need by place, cause and size, with their latest Form 990 figures and websites, and they arrive in your sheet, CRM, Slack or agent.

Every organization, largest by revenue first

OrganizationCityTypeSinceRevenueAssetsFiling
Elemental Excelerator IncHonolulu501(c)(3)2017$34.1 million$55.2 million2024-12
Hiipaka LLCHaleiwa501(c)(3)2012$12.4 million$35.7 million2025-12
Hawaiian Islands Land TrustHonolulu501(c)(3)2001$5.6 million$39.3 million2024-12
Hawaii Pacific Parks Association LTDHi Natl Park501(c)(3)1948$5 million$3.7 million2025-09
Kuaaina Ulu AuamoKaneohe501(c)(3)2013$3.7 million$4.5 million2024-12
Hawaii Tropical Botanical GardenPapaikou501(c)(3)1991$3.6 million$10.7 million2025-12
Sust Aina Ble MolokaiKaunakakai501(c)(3)2010$3.5 million$2.8 million2024-12
Kipuka KuleanaPrinceville501(c)(3)2022$3.4 million$3.3 million2024-12
The Kohala Center IncKamuela501(c)(3)2001$3 million$7.3 million2025-06
Aloha Puu KukuiLahaina501(c)(3)2024$2.9 million$1.3 million2025-12
Re-Use HawaiiHonolulu501(c)(3)2010$2.7 million$2.1 million2025-09
Aina MomonaKaunakakai501(c)(3)2017$2.7 million$1.2 million2025-12
Hawaiian Legacy Reforestation InitiativeHonolulu501(c)(3)2014$2.5 million$4.3 million2024-12
Pacific Whale FoundationWailuku501(c)(3)1985$2.5 million$6.4 million2024-12
Malama MaunaluaHonolulu501(c)(3)2010$2.4 million$2 million2024-12
Malama KauaiKilauea501(c)(3)2006$1.9 million$2.9 million2024-12
IoleHonolulu501(c)(3)2022$1.8 million$3 million2024-12
North Shore Community Land TrustHaleiwa501(c)(3)1998$1.7 million$1.8 million2024-12
Oahu Resource Conservation and Development CouncilKunia501(c)(3)1998$1.7 million$1.2 million2024-12
Hawaii Wildfire Management OrganizationKamuela501(c)(3)2004$1.6 million$863,1872024-12
Hawaii Rural Water AssociationWaikoloa501(c)(3)2018$1.6 million$562,7842024-12
Molokai Land TrustKaunakakai501(c)(3)2006$1.4 million$6 million2025-06
Merwin Conservancy IncHaiku501(c)(3)2015$1.4 million$3.5 million2025-12
Hui Maka Ainana O MakanaHanalei501(c)(3)2021$1.4 million$2.7 million2024-12
Waikiki Beach Special Improvement District AssociationHonolulu501(c)(3)2015$1.4 million$4.5 million2025-06
Hawaii Conservation AlliancefoundationHonolulu501(c)(3)2007$1.4 million$2 million2024-12
Kipahulu Ohana IncHana501(c)(3)1997$1.4 million$3.7 million2024-12
Pacific Rim Conservation IncHonolulu501(c)(3)2015$1.3 million$727,2672024-12
Hawaii Marine Education and Research CenterVolcano501(c)(3)2019$1.3 million$5.8 million2025-12
Papahana KuaolaKaneohe501(c)(3)2008$1.3 million$893,2032025-12
HuliauapaaHakalau501(c)(3)2014$1.2 million$556,2922024-12
Waikoloa Dry Forest Initiative IncWaikoloa501(c)(3)2012$1.2 million$636,5142025-12
Hawaii Institute of Pacific AgricultureKapaau501(c)(3)2014$1.1 million$1.2 million2024-12
Maui Nui Marine Resource Council IncKihei501(c)(3)2015$1.1 million$891,6712024-12
Sustainable Coastlines HawaiiHonolulu501(c)(3)2012$1.1 million$878,2522024-12
Community Work Day ProgramPuunene501(c)(3)1991$1.1 million$630,0692025-06
NA Kama KaiWaianae501(c)(3)2008$1 million$651,1252024-12
Three Mountain Alliance FoundationVolcano501(c)(3)2015$990,242$619,8352025-12
Garden Island Resource Conservation and Development IncLihue501(c)(3)1993$979,650$1.1 million2025-09
Waiorg IncHonolulu501(c)(3)2019$971,432$472,9252024-12
Akaka Foundation for Tropical forHilo501(c)(3)2014$958,289$199,6222024-12
Hawaii Water Environment AssociationHonolulu501(c)(3)1993$952,876$854,2022025-02
Hawaii Nature Center IncHonolulu501(c)(3)1981$916,098$5 million2024-12
Friends of Amy B H Greenwell Ethnobotanical GardenCaptain Cook501(c)(3)2016$707,537$2.2 million2024-12
Malama Haleakala FoundationMakawao501(c)(3)2023$634,245$50,1512024-12
Hawaii Wildlife FundKealakekua501(c)(3)1996$632,494$210,8572024-12
Friends of Auwahi Forest Restoration ProjectMakawao501(c)(3)2004$604,066$607,2842024-12
Maui Nui Botanical Gardens IncKahului501(c)(3)1995$582,822$475,8372025-06
Recycle HawaiiHilo501(c)(3)1993$574,945$20,5882025-06
Hoala Kealakekua Nui IncCaptain Cook501(c)(3)2023$563,425$177,4332025-12
Treecovery IncWailuku501(c)(3)2023$536,378$173,2632024-12
Protect & Preserve Hawaii IncHonolulu501(c)(3)2019$523,832$114,3352025-12
Ke Ao HaliiHana501(c)(3)2018$504,559$11.2 million2024-12
John T Waterhouse Share No 4 TrustHonolulu501(c)(3)1985$504,022$8.8 million2025-12
Kona Outdoor Circle Educational Center and Sadie Seymour BotanicalKailua Kona501(c)(3)1991$495,088$2.8 million2024-12
Friends of Hakalau Forest National Wildlife RefugeHilo501(c)(3)2006$492,639$387,2312025-12
Friends of Hawaiis Urban ForestKailua501(c)(3)2008$474,366$530,4682024-12
Big Island Resource Conservation and Development CouncilHilo501(c)(3)1994$467,724$393,2342024-12
Uhiwai O HaleakalaMakawao501(c)(3)2020$443,476$317,7472024-12
KHM InternationalKaunakakai501(c)(3)2004$435,307$777,7802024-12
808 CleanupsHonolulu501(c)(3)2015$408,604$401,0962025-12
North Beach - West Maui Benefit Fund IncLahaina501(c)(3)2010$404,639$202,2452024-12
Maui Ocean Center Marine InstituteWailuku501(c)(3)2016$393,546$47,0302024-12
Lyon Arboretum AssociationHonolulu501(c)(3)1975$391,828$700,7752024-12
Ohuohu Koolau IncPearl City501(c)(3)2007$391,191$490,6842025-12
Blue Planet FoundationHonolulu501(c)(3)2007$377,633$122,3602024-12
Ka EhuWailuku501(c)(3)2014$366,039$214,5932025-12
The Outdoor CircleHonolulu501(c)(3)1953$340,696$1.8 million2025-09
Palehua Conservation InitiativeKapolei501(c)(3)2024$340,415$143,0412024-12
Rotary Club of Lahaina Sunset FoundationLahaina501(c)(3)2019$339,740$132,5442025-06
Maunalua Fishpond Heritage CenterHonolulu501(c)(3)2015$336,176$2.5 million2024-12
Hui Mahiai AinaWaimanalo501(c)(3)2021$335,362$246,6052025-12
Institute for Climate and PeaceHonolulu501(c)(3)2019$296,775$116,8422023-12
Conservation Council for HawaiiHonolulu501(c)(3)1980$290,722$169,7262025-12
One Village ProjectKapaau501(c)(3)2016$286,178$113,9912025-12
Hawaii Audubon SocietyHonolulu501(c)(3)1954$273,452$163,4862025-12
Hawaii Seafood CouncilHonolulu501(c)(3)2007$271,267$196,3552025-12
Kahaluu KuahewaKailua Kona501(c)(3)2022$264,425$155,7942024-12
Hawaii Forest InstituteHonolulu501(c)(3)2004$263,830$187,8212024-12
Friends of Waipahu Cultural Garden ParkWaipahu501(c)(3)2017$260,054$1.8 million2025-06
Friends of MahaulepuKoloa501(c)(3)2016$259,060$114,6892024-12
Kanu HawaiiHonolulu501(c)(3)2007$257,751$221,5552024-12
Aloha Tree AllianceHonolulu501(c)(3)2021$256,483$177,9922024-12
Hiki OlaKealakekua501(c)(3)2020$250,450$368,4242024-12
Malama O PunaPahoa501(c)(3)2000$246,032$218,6982024-12
WaihapakaiKaneohe501(c)(3)2022$245,249$86,0802025-12
Healthy Climate CommunitiesKailua501(c)(3)2017$232,258$120,7742025-12
Bio Bamboo IncHaiku501(c)(3)2013$212,557$295,2232024-12
Hiilei Aloha LLCHonolulu501(c)(3)2008$204,600$20,1102021-12
Regenerative Education CentersKahului501(c)(3)2019$203,725$315,7172024-12
Reef Guardians HawaiiPrinceville501(c)(3)2015$200,868$189,6542024-12
Reorganized Olowalu Cultural ReserveLahaina501(c)(3)2021$193,904$53,0642024-12
Pangeaseed FoundationKeaau501(c)(3)2015$193,193$51,5202024-12
Trees for Honolulus FutureHonolulu501(c)(3)2017$190,268$110,5172025-12
Puako for ReefsKamuela501(c)(3)2023$188,039$107,8692025-12
NA Mamo Aloha Aina O HonokohauLahaina501(c)(3)2020$175,740$827,9112024-12
Friends of Honolulu Botanical GardensHonolulu501(c)(3)1963$175,294$900,0592024-12
Keiki and PlowHonolulu501(c)(3)2018$172,084$58,8182025-12
Whaleman International LTDLahaina501(c)(3)1997$163,177$5,3782025-08
Maui Nui Community Managed Makai Area Learning NetworkMakawao501(c)(3)2015$161,048$49,5532024-12
Wild Communities FoundationKailua501(c)(3)2018$159,002$41,2602024-12
Hoomalu Ke KaiLawai501(c)(3)2021$154,242$54,8982025-04
Landscape Industry Council of Hawaii FoundationKailua Kona501(c)(3)2006$153,680$78,3872024-12
I Nui Ke AhoWaialua501(c)(3)2018$145,883$98,6702024-12
Kahea the Hawaiian Environmental AllianceHonolulu501(c)(3)2000$144,243$637,4522025-06
Honua Kai West Maui Community Fund IncLahaina501(c)(3)2010$144,044$158,4552024-12
Ala Kahakai Trail AssociationKamuela501(c)(3)2011$139,079$19.9 million2024-12
NA Mamo O MuoleaHana501(c)(3)2007$136,227$107,2072024-12
Garden Club of HonoluluHonolulu501(c)(3)1909$131,121$551,0672025-06
Kakoo LahuiHonolulu501(c)(3)2025$125,019$31,7572025-12
Green Will Conservancy IncPahoa501(c)(3)2010$108,715$68,7422024-12
Malama Hamakua MauiHaiku501(c)(3)2019$108,381$37,4402025-06
Kupa Friends of Ho Okena Beach ParkHonaunau501(c)(3)2006$106,940$116,7262024-12
Plant A Tree Hawaii IncHonolulu501(c)(3)2019$103,605$79,8872025-12
When We ShineKula501(c)(3)2019$102,120$50,0832024-12
Hui O KoolaupokoKailua501(c)(3)2008$101,871$289,8152025-12
Water for Life InstituteKailua Kona501(c)(3)2007$101,297$100,0382025-12
Hawaii Environmental RestorationPahoa501(c)(3)2019$93,738$123,2232025-12
Hui Aloha PuukapuKamuela501(c)(3)2023$92,831$138,5622025-12
Livable Hawaii Kai HuiHonolulu501(c)(3)2021$89,045$11.2 million2023-12
KuhialokoEwa Beach501(c)(3)2020$89,005$169,9492025-12
Stable Road Beach Restorationfoundation IncPaia501(c)(3)2008$89,000$28,2202025-12
Aoao O NA Loko Ia O MauiKihei501(c)(3)1998$85,434$3,9212024-12
Kure Atoll ConservancyVolcano501(c)(3)2009$76,293$379,9582025-12
Coherence LabKapaa501(c)(3)2015$72,867$8,0592025-12
I Ola Wailuanui IncKapaa501(c)(3)2023$68,505$220,9062025-12
Hanalei Watershed HuiHanalei501(c)(3)2004$68,016$79,8182024-12
Aina Hoola InitiativeHilo501(c)(3)2022$58,562$25,6602025-12
Worldopt Institute IncHonolulu501(c)(3)2019$58,166$1.6 million2024-12
Hilo Orchid Society IncHilo501(c)(3)2001$56,473$96,2102025-12
Makahanaloa Fishing AssociationPepeekeo501(c)(3)2024$55,455$59,4242026-03
Pacific American Foundation HawaiiKailua501(c)(3)2015$53,886$2.3 million2024-12
Understory AllianceHanalei501(c)(3)2022$44,613$44,0532025-12
Terraformation Org FoundationKamuela501(c)(3)2021$40,040$38,2242024-12
Napili Bay and Beach Foundation IncLahaina501(c)(3)2006$38,098$129,5802024-12
Save Honolua CoalitionLahaina501(c)(3)2008$34,393$26,1392024-12
Waihunahuna FoundationKilauea501(c)(3)2022$33,760$40,2022024-12
Hui O NA Wai EhaWailuku501(c)(3)2026$31,000$120,8142025-12
Growing One FutureKeaau501(c)(3)2024$29,366$62025-12
Friends of Hanauma BayHonolulu501(c)(3)1995$24,532$277,7992024-12
Konea OlaKealakekua501(c)(3)2024$21,313$133,5862025-12
Friends of the National Parks Trust of the Virgin Islands UkHonolulu501(c)(3)2026$20,000$19,9632025-12
Ka Ohana O Kahikinui IncKula501(c)(3)2014$18,627$92,1802025-12
Hawaii UnitesKihei501(c)(3)2023$16,408$21,3812025-12
Tipu Tipu Restoration and SustainabilityKahului501(c)(3)2023$16,168$46,0052025-12
Shoreline Preservation CoalitionHaleiwa501(c)(4)2023$15,325$2,0192025-12
Hui KahuwaiKailua Kona501(c)(3)2023$14,696$15,5422024-12
Iewe Hanau O Ka AinaNaalehu501(c)(3)2024$8,796$2,8232025-12
Lahui FoundationKahuku501(c)(3)2021$8,000$9,9402025-12
Trees To Seas IncHonolulu501(c)(3)2014$4,673$21,7072025-06
NA Pali Coast OhanaLihue501(c)(3)1997$4,024$86,9292025-12
Waiea Water Foundation IncHonolulu501(c)(3)2023$1,000$12025-12
Malama Pono Nui LoaHonolulu501(c)(3)2023$195$2952023-12
Malama Kahalawai IncLahaina501(c)(3)2002$3$222,7452023-12
Better Block HawaiiHonolulu501(c)(3)2015$2$10,9712025-12
2050 Hawaii IncKapolei501(c)(3)2019$3,0062024-12
3T FoundationNaalehu501(c)(3)2023$0$02025-12
808 Youth RisingKahuku501(c)(3)2020$0$02025-12
A Little GreenHawi501(c)(3)2019$0$02025-12
Agroforestry Net IncHolualoa501(c)(3)2003$0$02025-12
AhaainaKapaau501(c)(3)2024$0$02024-06
Aina InstituteKailua501(c)(3)2024$0$02023-12
Aina Wellness Academy IncHonolulu501(c)(3)2021$0$12025-12
Akoakoa Foundation IncKailua Kona501(c)(3)2023$0$30,3372025-12
Aloha Makena Foundation IncKihei501(c)(3)2021$0$02025-12
Aloha Ocean PlusHonolulu501(c)(3)2021$0$02025-12
Amama FoundationWaikoloa501(c)(3)2018$9792025-12
AndeerianHonolulu501(c)(3)2025$0$02023-12
Asta-Ja USAHonolulu501(c)(3)2019$0$02025-12
Aumaka HileaMountain View501(c)(3)2025$0$02026-06
Aumakua AcresOcean View501(c)(3)2025
Babuhawaii FoundationHonolulu501(c)(3)2020$0$02023-12
Beach Environmental Awareness Campaign HawaiiHonolulu501(c)(3)2013$0$02024-12
Blue Ala Wai Canal FoundationHonolulu501(c)(3)2024$0$2762025-12
Blue Ocean FuturesHonolulu501(c)(3)2026
Blue Ocean WarriorsHonolulu501(c)(3)2022$0$02025-12
Breath of Heaven Sustainable Living CenterWailuku501(c)(3)2014$0$02025-12
Cactus & Succulent Society of HawaiiPearl City501(c)(3)2024$0$02025-12
Castiglione A Casauria FoundationHonolulu501(c)(3)1999$2.8 million2025-12
Cave Conservancy of HawaiiOcean View501(c)(3)2003$0$02025-12
Clean Water Initiative IncHonolulu501(c)(3)2025$0$02025-12
Conservation MindHonolulu501(c)(3)2025$0$02025-06
Coral Reef Education InstituteKailua Kona501(c)(3)2019$0$02025-12
Dana Anne Yee FoundationHonolulu501(c)(3)2016$0$02025-12
Debolt Gardens FoundationMakawao501(c)(3)2009$1.6 million2024-12
Developing World SolarHonolulu501(c)(3)1999$0$02025-12
Dragonfly Ranch Educational CenterHonaunau501(c)(3)2019$0$02024-12
E Kupaku Ka Aina the Hawaii Land Restoration InstituteWailuku501(c)(3)2020$1.2 million2024-12
Earthrm IncHilo501(c)(3)2025$0$02025-12
East Maui Land RestorationHaiku501(c)(3)2024$0$02026-07
EconserveHaiku501(c)(3)2024
Ecotipping Points ProjectKailua501(c)(3)2010$0$02025-12
Ewa Orchid Society IncorporatedEwa Beach501(c)(3)2025$0$02025-12
Exceptional Trees InternationalHonolulu501(c)(3)2025$0$02025-12
Find A Spring FoundationKilauea501(c)(3)2020$0$02024-12
Fit for Joy- Garden of Well-BeingPrinceville501(c)(3)2025
Friends of Free SpiritHilo501(c)(3)2025
Friends of Haleakala National Park IncMakawao501(c)(3)1997$0$02025-12
Friends of Hawaiian Islands National Wildlife RefugeHonolulu501(c)(3)2015$0$02025-12
Friends of Historic Banyan DriveHilo501(c)(3)2022$0$02025-12
Friends of KewaloHonolulu501(c)(3)2010$0$02025-12
Friends of Liliuokalani GardensHilo501(c)(3)2014$0$02025-12
Friends of MolokiniKihei501(c)(3)2023$0$02025-12
Friends of OhikiloloWaianae501(c)(3)2017$0$02024-12
Friends of Pacific Marine Sanctuari EsKihei501(c)(3)2026$0$02025-12
Friends of TantalusHonolulu501(c)(3)2025
Friends of Twin Falls MauiHaiku501(c)(3)2022$0$02025-12
Gap FoundationEwa Beach501(c)(3)2025$0$02025-12
Global Ecology FoundationHonokaa501(c)(3)2026
Global Preservation Initiative IncHonolulu501(c)(3)2022$0$02025-12
Green Thumb Garden ClubEwa Beach501(c)(7)2015$0$02025-12
GreenswellMakawao501(c)(3)2022$0$02025-01
Guardians of Pu U Kukui IncLahaina501(c)(3)2024
Hafaadai FarmMountain View501(c)(3)2023$0$02023-12
Halama Street Beach Restoration IncHonolulu501(c)(3)2020$0$02025-12
Hamakua GroupKailua501(c)(3)2022$0$02025-12
Hanai KaiauluWaianae501(c)(3)2021$0$02025-12
Hawaii - American Nurses Association FoundationHonolulu501(c)(3)2022$0$02025-12
Hawaii Association for Marine Education and Research IncLahaina501(c)(3)2015$0$02025-06
Hawaii Big Game Fishing ClubKailua Kona501(c)(3)2019$0$02025-12
Hawaii Butterfly GardenAnahola501(c)(3)2020$0$02025-12
Hawaii Creative ReuseHonolulu501(c)(3)2025
Hawaii Ecotourism AssociationKahului501(c)(3)1997$0$02024-12
Hawaii Electric Vehicle AssociationHilo501(c)(3)2024$0$02025-12
Hawaii Fishing & Boating AssociationKailua Kona501(c)(3)2013$0$02025-12
Hawaii Harbors Coastal CleanupHonolulu501(c)(3)2025
Hawaii Institute of RainwaterPahoa501(c)(3)2026$0$12026-06
Hawaii Loa Ridge PreserveHonolulu501(c)(3)2017$388,2872025-12
Hawaii Nature HuiHonolulu501(c)(3)2016$0$02024-12
Hawaii Ocean WatchKailua Kona501(c)(3)2016$0$02024-12
Hawaii PV CoalitionMakawao501(c)(6)2014$0$02025-12
Hawaii Sakura FoundationHonolulu501(c)(3)2017$7,4202024-12
Hawaii Uncharted Research CollectiveHaiku501(c)(3)2018$0$02025-12
Hawaii Water Works AssociationHonolulu501(c)(3)2022
Hawaii Youth Climate CoalitionHonolulu501(c)(4)2021$0$02024-12
Hawaiian Honey BeesKaneohe501(c)(3)2019$0$02024-12
Hawaiian Islands Conservation CollectiveKailua501(c)(3)2021$0$02025-12
Hawaiian Reforestation ProgramPepeekeo501(c)(3)1997$0$02023-12
Hawaiian Sanctuary IncPahoa501(c)(3)2012$0$02025-12
Hawaiian Trail & Mountain CorporationWaimanalo501(c)(3)2018$0$02025-12
Hawaiis Lifeguard & Water Safety Fu NDMililani501(c)(3)2026$0$12023-12
Hele Mua IncHonolulu501(c)(3)2024$0$02025-12
Henry K Lindsey FoundationHilo501(c)(3)2022$0$02024-12
Hoala KealakekuaCaptain Cook501(c)(3)2022$0$02024-12
Hoi Hoi EaKaneohe501(c)(3)2017$0$02024-05
Hokupa A Foundation IncorporatedHonolulu501(c)(3)2026$0$02025-12
Honolulu Orchid Society IncHonolulu501(c)(3)1952$0$02025-12
Honolulu UmisakuraHonolulu501(c)(3)2017$0$02025-12
Hoola Aina O KulaKula501(c)(3)2022$0$25,8082025-12
Hoolehua Agriculture Axis ProgramWaimanalo501(c)(3)2026
Hoomalu Aina the Kamahele Ohana LegacyHilo501(c)(3)2025
Hoomau Ranch ConservancyHonolulu501(c)(3)2017$0$02025-12
Hua Aina O HonaunauKealakekua501(c)(3)2020$0$02024-12
Hui Ho Olako for Hawaiian InitiativesHilo501(c)(3)2020$0$02023-12
Hui NehuKihei501(c)(3)2023$0$02025-12
Hui Okika O KuniaMililani501(c)(3)2011$0$02025-12
Huli Hawaii IncHonolulu501(c)(3)2018$0$02025-12
Ike LawaiaCaptain Cook501(c)(3)2024$0$02025-12
Ikena EcosystensKaneohe501(c)(3)2023$0$02023-12
Ikenobo Ikebana Society Honolulu Hawaii ChapterWaipahu501(c)(3)2009$0$02026-03
Imua Conservation OrganizationKapaa501(c)(3)2023$1,2352025-12
Japan Hawaii Wedding AssociationHonolulu501(c)(3)2018$4,1582025-03
Ka Ha O Ka Aina IncHawi501(c)(3)2020$2.2 million2025-12
Ka Ike O Ka AinaKurtistown501(c)(3)2026$0$02025-12
Ka Ohana O HonuapoNaalehu501(c)(3)2006$0$02025-12
Kai Action InstitutePaia501(c)(3)2026$0$12025-12
Kai Makana IncHonolulu501(c)(3)1999$0$02025-12
Kai Ola Eco FoundationLahaina501(c)(3)2025
Kaiaulu InitiativesLahaina501(c)(3)2024$0$11,3012024-12
Kaimuki Orchid SocietyHonolulu501(c)(5)2014$0$02024-12
Kalihi Ahupuaa Ulu Pono AhahuiKailua501(c)(3)2005$0$02025-12
Kanaka ApauKaunakakai501(c)(3)2025$0$02025-06
Kanaka ClimbersWaianae501(c)(3)2021$0$02023-12
Kauai Ocean AwarenessKalaheo501(c)(3)2022$0$02025-12
Kaulike ProjectHonolulu501(c)(3)2024$0$02025-12
Keep the North Shore CountryHaleiwa501(c)(3)2008$0$02026-06
Kilohana KauPahala501(c)(3)2025$0$02025-12
Kingdom PathwaysWaianae501(c)(3)2021$0$02025-03
Koa Cloud Forest ConservancyOcean View501(c)(3)2026$0$02026-02
KogiaHaiku501(c)(3)2022$0$02025-12
Kohala Center FoundationKamuela501(c)(3)2015$0$2 million2025-06
Kohala LihikaiKapaau501(c)(3)2017$0$02025-12
Kohola FoundationHonolulu501(c)(3)2021$0$02025-12
Koloa Community AssociationKoloa501(c)(3)2020$0$02024-12
Kuamoo Legacy FoundationKeaau501(c)(3)2024$0$02025-12
Kuilei CliffsHonolulu501(c)(3)2022$0$02025-12
Kula Community Watershed AllianceKula501(c)(3)2026$0$02026-06
Kuleana InnovationsHonolulu501(c)(3)2025$0$02025-12
Kuleana Ka AinaPearl City501(c)(3)2024$0$12024-12
Kupaa KuilimaKahuku501(c)(3)2025$0$02025-12
Kupeke AhupuaaKaunakakai501(c)(3)2020$0$02024-06
Lanikai Beach and Park Foundation IncKailua501(c)(3)2001$0$02025-12
Lean in IncKilauea501(c)(3)2019$0$02024-12
Legasea Energy FoundationHaleiwa501(c)(3)2022$0$02026-06
Living Indigenous Forest EcosystemsWailuku501(c)(3)1995$0$02024-12
Living Planet AlliancePahoa501(c)(3)2018$0$02025-12
Living Roots InitiativeHonolulu501(c)(3)2025$0$02025-12
Long Spoon FarmsHonolulu501(c)(3)2021$0$02024-03
Love the SeaHonolulu501(c)(3)2015$0$8,9822026-03
MLT Holdings IncKaunakakai501(c)(3)2017$0$6.1 million2025-06
Maalaea Wastewater AssociationPaia501(c)(12)2024$0$02024-12
Maana - Maoli Aquaculture & Agriculture Native AssistanceKaunakakai501(c)(3)2024$12024-12
Makauwahi Cave ReserveLihue501(c)(3)2020$0$02025-12
Malama Kama Alaea IncWailuku501(c)(3)2024$0$02026-01
Malama Kipuka HawaiiHonolulu501(c)(3)2016$0$02025-12
Malama Kua AlnaHanalei501(c)(3)2014$59,3562025-12
Malama MahaulepuKoloa501(c)(3)2002$0$02025-09
Malama MakuaHonolulu501(c)(3)2002$0$02025-12
Malama NA ApapaAnahola501(c)(3)2007$0$02025-12
Malama O Ke KahaKailua Kona501(c)(3)2023$0$02025-12
Malama RisingWaianae501(c)(3)2022$0$02024-12
Malama WatersKapaa501(c)(3)2023$5502023-12
Malipolipo Foundation IncKealakekua501(c)(3)2026
Mana Mentors IncLahaina501(c)(3)2022$107,7772024-12
Manoloa IncNinole501(c)(3)2020$0$02025-12
Maui Growers and Floriculture CollectiveMakawao501(c)(3)2024$0$02025-12
Maui Orchid Society IncKahului501(c)(3)2001$0$02025-12
Mauna Loa Observatory Employee AssociationHilo501(c)(4)2026$0$02025-12
Mission Sunrise InitiativeHonolulu501(c)(3)2025$0$02024-12
Mohala I Ka WaiWaianae501(c)(3)2011$0$02025-12
Moku O Keawe Land ConservancyHilo501(c)(3)2023$0$02025-12
Moku O Waialua Watershed Actiongroup IncWaialua501(c)(3)2006$0$02025-12
NA Hinano O OpanaPaia501(c)(3)2022$0$02024-12
NA Hoa Ululaau O KalamawaiawaawaCaptain Cook501(c)(3)2024$0$02025-12
NA Hoaloha O Kaaina LTDLahaina501(c)(3)2001$90,8822025-09
NA Mamo O KawaNaalehu501(c)(3)2014$0$02024-12
NA Papai Wawae UlaulaWailuku501(c)(3)2022$0$02025-12
Nahele Hou FoundationKula501(c)(3)2023$7.3 million2025-12
Nanna I Bradford Foundation for Cle Anliness of the OceanHonolulu501(c)(3)2026
National Tropical Botanical GardenKalaheo501(c)(3)19712024-12
Native Ecosystem Restoration SolutionsHonolulu501(c)(3)2025$0$02025-12
New Cycle FoundationWaimanalo501(c)(3)2023$0$02024-06
Ocean ConsciousKeaau501(c)(3)2026
Ocean JanitorsCaptain Cook501(c)(3)2024
Ocean Rescue FoundationHonolulu501(c)(3)2016$0$02025-12
Ocean Seed Foundation IncKealakekua501(c)(3)2021$0$02025-12
OceanamaticaNaalehu501(c)(3)2020$0$02025-12
Ohia Legacy InitiativeHonolulu501(c)(3)2015$0$02025-12
Onewild IncPrinceville501(c)(3)2022$0$02025-12
OnomiluKalaheo501(c)(3)2025$0$02025-12
Pacific Bonsai ClubHonolulu501(c)(5)2026
Pahonu Beach Community Restoration Foundation IncWaimanalo501(c)(3)2021$0$02024-12
Pono EthosHonolulu501(c)(3)2019$0$02024-12
Practical Policy Institute of HawaiiKailua501(c)(3)2022$0$02025-12
Project ReuseKihei501(c)(3)2025$0$02025-12
Protect Our Ala Wai WatershedsHonolulu501(c)(3)2019$0$02025-12
Protectors of ParadiseWaipahu501(c)(3)2017$0$02024-12
Puao Ola O LakaWaimanalo501(c)(3)2025$0$12025-12
Puma Punku Ocean Clean Up IncWaianae501(c)(3)2014$0$02025-12
Pure KNF FoundationPapaikou501(c)(3)2019$0$02025-12
Puuwai Ko OlaWaianae501(c)(3)2024$0$02025-12
Quiet Ocean Standards InitiativeKapaa501(c)(3)2023$0$02025-12
RHBS FoundationEwa Beach501(c)(3)2025$0$02025-12
Radical Joy for Hard TimesWaimanalo501(c)(3)2010$0$02025-12
Rae of Lavender Field and Eco FarmHaleiwa501(c)(3)2023$0$02025-12
Rama TreeKamuela501(c)(3)2010$0$02025-12
Reef ScubaHonolulu501(c)(3)2020$0$02025-06
Regenerations International Botanical GardenKilauea501(c)(3)2009$0$02025-12
Roberts Hawaii FoundationHonolulu501(c)(3)2016$0$50,9262024-12
Root & Rise HawaiiCaptain Cook501(c)(3)2023$0$02025-12
Save Kaiwa RidgeKaneohe501(c)(3)2016$0$02025-07
Save Sharks Cove AllianceHaleiwa501(c)(3)2025$0$02025-12
Saving Hawaiis ForestsKaneohe501(c)(3)2018$0$02025-12
Scenic Hawaii IncHonolulu501(c)(3)1996$0$02025-12
Sea InspirationHonolulu501(c)(3)2010$0$02025-12
Seahorse Hawaii FoundationKailua Kona501(c)(3)2006$0$02024-12
Seas of Change Foundation IncWaipahu501(c)(3)2024
Seascape AcademyMililani501(c)(3)2024$0$02024-12
Sol Projex FoundationKilauea501(c)(3)2026
South Kohala Reef AllianceKamuela501(c)(3)2012$0$02024-12
StyrophobiaHonolulu501(c)(3)2015$0$02023-12
Symbrosia FoundationKailua Kona501(c)(3)2024$0$02024-12
The Coral ConservancyHonolulu501(c)(3)2026$2,7372021-12
Think Beyond the PumpKapaau501(c)(3)2022$0$02024-12
Thriving Waters InternationalKamuela501(c)(3)2019$0$02024-12
Tide Together MauiLahaina501(c)(3)2025
Tiffany ProjectKamuela501(c)(3)2015$0$02025-12
Tjootjim FoundationHaleiwa501(c)(3)2020$805,8862024-10
Treeligion IncHaiku501(c)(3)2021$0$02023-12
Trees for Tomorrow TodayPaia501(c)(3)2024$0$02025-08
Uluniu Beach Reserve AssociationKihei501(c)(4)2014$0$02024-07
Uncles Kokua CenterPahoa501(c)(3)2021$0$02025-12
Waihee Valley RestorationKahului501(c)(3)2013$0$02025-12
Wailea808Wailea501(c)(3)2025$0$02025-12
Waioli Valley Taro Hui IncHanalei501(c)(3)2019$0$02025-12
Water Innovation Foundation IncAnahola501(c)(3)2022$0$02024-12
WavewerkHonolulu501(c)(3)2025
West Hawaii Parks and Athletic CorporationKailua Kona501(c)(3)2012$0$02025-12
West Hawaii Surfing Associations Kona IncKailua Kona501(c)(3)2025$0$02025-12
Western Pacific Regional Fishery Management CouncilHonolulu501(c)(3)2013
Weylin and Roselyn Eng Family Found AtionHonolulu501(c)(3)2025$1 million2025-12
Whale Wise FoundationKula501(c)(3)2025$0$02025-12
Whales R FunLahaina501(c)(3)2026
Wild Whale Research FoundationHolualoa501(c)(3)1996$0$02025-06
Xi Im Ek Balam IncPahoa501(c)(4)2025$0$02025-12
Zero Waste HawaiiHonolulu501(c)(3)2021$0$02025-12

Every nonprofit in Hawaii

Read from the IRS Exempt Organizations Business Master File, updated by the IRS on October 24, 2026 and rebuilt here every morning. Revenue and assets are from each organization's latest filing as the IRS lists it; the IRS record is the official one. Organizations only: no people are named on these pages.