Environment Nonprofits in Honolulu, HI

100 environment nonprofits in Honolulu, Hawaii. Run local peer comparisons, IRS 990 checks, and source-backed decisions.

100Organizations
$129.5MTotal Revenue
$0Total Assets

Environment Organizations in Honolulu (100)

#OrganizationRevenueAssetsScore
1 Hawaiian Islands Land Trust $70.8M $0 —
2 Elemental Excelerator Inc $36.3M $0 —
3 John T Waterhouse Share No 4 Trust $5.7M $0 —
4 Hawaiian Legacy Reforestation Initiative $2.5M $0 —
5 Malama Maunalua $2.4M $0 —
6 Iole $1.8M $0 —
7 Waikiki Beach Special Improvement District Association $1.4M $0 —
8 Sustainable Coastlines Hawaii $1.1M $0 —
9 Hawaii Water Environment Association $994K $0 —
10 Waiorg Inc $971K $0 —
11 Hawaii Nature Center Inc $918K $0 —
12 Friends Of Honolulu Botanical Gardens $596K $0 —
13 The Outdoor Circle $472K $0 —
14 Protect & Preserve Hawaii Inc $434K $0 —
15 Garden Club Of Honolulu $384K $0 —
16 Castiglione A Casauria Foundation $344K $0 —
17 Institute For Climate And Peace $297K $0 —
18 808 Cleanups $279K $0 —
19 Hawaii Forest Institute $264K $0 —
20 Aloha Tree Alliance $256K $0 —
21 Conservation Council For Hawaii $252K $0 —
22 Hawaii Audubon Society $185K $0 —
23 Keiki And Plow $179K $0 —
24 Plant A Tree Hawaii Inc $138K $0 —
25 Trees For Honolulus Future $132K $0 —
26 Kahea The Hawaiian Environmental Alliance $114K $0 —
27 Better Block Hawaii $93K $0 —
28 Worldopt Institute Inc $58K $0 —
29 Blue Ala Wai Canal Foundation $30K $0 —
30 Friends Of Hanauma Bay $25K $0 —

Frequently Asked Questions

How many environment nonprofits are in Honolulu, Hawaii?

There are 100 environment nonprofits in Honolulu, Hawaii, with $129.5M in combined annual revenue.

What is the largest environment nonprofit in Honolulu?

The largest by revenue is John T Waterhouse Share No 4 Trust with $5.7M in annual revenue.

How can I research environment charities in Honolulu?

Click on any organization above to view its full AI-powered transparency report, including IRS 990 financial data, spending breakdowns, executive compensation, and risk assessments.

Are there other types of nonprofits in Honolulu?

Yes, visit the Honolulu city page to see all nonprofit categories operating in this city, or use our search to find specific organizations.

Other Categories in Honolulu

Arts, Culture & Humanities Education Animal-Related Health Care Mental Health Disease & Disorders Medical Research Crime & Legal Employment Food, Agriculture & Nutrition

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