Hawaii · Grantmakers

Foundations That Fund Environment & Conservation in Hawaii

Imperigo has identified 205 funders that made 1,033 grants totaling $106.7M to 138 environment & conservation organizations in Hawaii, with a median grant of $20K. Every figure below is drawn from IRS Form 990 filings through 2025.

Environment & Conservation Funding in Hawaii

Total granted $106.7M
Funders 205
Grants 1,033
Organizations funded 138

Top Funders — page 1 of 4

1. John T Waterhouse Te Co-Tr Tropical
6 grants to 1 organization · largest $482K · through 2025 · 100.0% of their giving
$2.7M
2. Hale Halawai Ohana O Hanalei
4 grants to 2 organizations · largest $762K · through 2025 · 37.0% of their giving
$1.9M
3. Trustees of the Estate of Bernice Pauahi Bishop DBA Kamehameha Schools
43 grants to 15 organizations · largest $917K · through 2024 · 3.8% of their giving
$8.7M
4. National Rural Water Association
4 grants to 1 organization · largest $1.2M · through 2024 · 1.6% of their giving
$4.1M
5. National Fish and Wildlife Foundation
35 grants to 13 organizations · largest $2.0M · through 2023
$6.9M
6. Parley Foundation
2 grants to 1 organization · largest $50K · through 2024 · 27.2% of their giving
$100K
7. Waipahu Community Foundation
5 grants to 1 organization · largest $21K · through 2024 · 15.3% of their giving
$92K
8. Hawaii Visitors and Convention Bureau
9 grants to 6 organizations · largest $54K · through 2023 · 4.3% of their giving
$274K
9. Johnson Ohana Foundation C/O High Note Management Inc
11 grants to 4 organizations · largest $15K · through 2024 · 8.2% of their giving
$122K
10. Kaanapali Ocean Resort Charitable Trust
2 grants to 2 organizations · largest $25K · through 2023 · 14.1% of their giving
$50K
11. Hawaii Council for Humanities
8 grants to 6 organizations · largest $20K · through 2023 · 6.3% of their giving
$110K
12. The Garden Club of Honolulu
4 grants to 4 organizations · largest $10K · through 2024 · 36.6% of their giving
$32K
13. Mlt Holdings Inc
1 grant to 1 organization · largest $23K · through 2019 · 100.0% of their giving
$23K
14. Hui Huliau
2 grants to 1 organization · largest $100K · through 2024 · 2.9% of their giving
$125K
15. Honua Kai-West Maui Comm Benefit Fund Inc
3 grants to 2 organizations · largest $16K · through 2022 · 7.9% of their giving
$36K
16. Maui United Way
2 grants to 2 organizations · largest $100K · through 2023 · 2.2% of their giving
$110K
17. Community Foundation of New Jersey
1 grant to 1 organization · largest $1.0M · through 2024
$1.0M
18. Ka Ohana O Kahikinui Inc
1 grant to 1 organization · largest $10K · through 2024 · 100.0% of their giving
$10K
19. The Funders Network Inc
2 grants to 1 organization · largest $73K · through 2023 · 1.7% of their giving
$115K
20. Orange County Community Foundation
2 grants to 2 organizations · largest $1.0M · through 2021
$1.0M
21. Friends of Hawaii Charities Inc C/O 141 Hawaii LLC
4 grants to 3 organizations · largest $42K · through 2021 · 2.3% of their giving
$74K
22. Kapalua Maui Charities Inc
1 grant to 1 organization · largest $10K · through 2024 · 14.3% of their giving
$10K
23. Silicon Valley Community Foundation
10 grants to 6 organizations · largest $3.5M · through 2024
$4.4M
24. Greater Good Charities
3 grants to 1 organization · largest $36K · through 2021 · 1.1% of their giving
$102K
25. Kauai Energy Institute
4 grants to 1 organization · largest $10K · through 2024 · 2.6% of their giving
$40K

Funders are ordered by how much of their overall giving goes to environment & conservation work in Hawaii, not by dollar totals alone — a foundation that concentrates its giving here is usually a better prospect than a larger one for which this is a rounding error. 11 of the funders counted here are donor-advised fund sponsors, which grant on behalf of individual donors and accept no applications; they are marked and ranked last.

Other Causes Funded in Hawaii

About This Data

A grant appears here when a funder reported it on its IRS Form 990 and the recipient organization is classified under the NTEE group covering environment & conservation work, with an address in Hawaii. Grants are counted from the 2025 filing year backward.

Some 990 grant schedules list a recipient by name and address without an EIN, and those grants cannot be matched to a classification — so the totals above represent identifiable environment & conservation funding in Hawaii, not every dollar that reached the sector. Figures are a floor, not a ceiling.

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Research Hawaii funders in depth

Full grant histories, recipient lists, officer compensation, multi-year financials, and exports for every foundation Imperigo tracks.