Grant funders / Oklahoma / Environment & Conservation
Environment & Conservation Grant Funders in Oklahoma
60 foundations with a documented environment & conservation focus have made grants to Oklahoma nonprofits in recent years, together directing $17.8M to organizations across the state. Below are the most active — every funder links to a full giving profile, and Bespoke Grants will match all 60 against your nonprofit's specific mission, for free.
60
Environment & conservation funders
$17.8M
Given to Oklahoma nonprofits
218
Grants on record
2025
Most recent giving
Most active environment & conservation funders in Oklahoma
| # | Funder | Based in | Total Oklahoma giving | Grants | Latest |
|---|---|---|---|---|---|
| 1 | The Leona M and Harry B Helmsley | New York | $4.3M | 3 | 2024 |
| 2 | Conrad N Hilton Foundation | California | $1.3M | 2 | 2024 |
| 3 | National Fish and Wildlife Foundation | District of Columbia | $1.1M | 6 | 2023 |
| 4 | Avedis Foundation | Oklahoma | $1.1M | 8 | 2022 |
| 5 | Greater Houston Community Foundation | Texas | $596K | 3 | 2024 |
| 6 | Kipp Foundation | California | $572K | 2 | 2018 |
| 7 | American Journalism Project Inc | District of Columbia | $349K | 3 | 2024 |
| 8 | Houston Zoo Inc | Texas | $331K | 2 | 2023 |
| 9 | Kirkpatrick Foundation Inc | Oklahoma | $320K | 10 | 2024 |
| 10 | The Nature Conservancy | Virginia | $310K | 11 | 2024 |
| 11 | Commonwealth Foundation | Oklahoma | $310K | 3 | 2024 |
| 12 | Environmental Defense Fund Incorporated | New York | $295K | 5 | 2018 |
| 13 | Mary K Chapman Foundation | Oklahoma | $250K | 2 | 2023 |
This list is ranked by size. Yours should be ranked by fit.
The funders above are the biggest environment & conservation funders in Oklahoma — not necessarily the right ones for you. Bespoke Grants ranks all 60 against your nonprofit's actual mission, service area, and budget, and shows you why each one matches. Free, no credit card.
Rank these funders for my nonprofit →Environment & Conservation funders in other states
Other causes funded in Oklahoma
How this list is built. Bespoke Grants indexes 13M+ grants from public IRS Form 990 filings. This page shows foundations whose giving carries a documented environment & conservation focus and that have funded Oklahoma nonprofits. Giving figures reflect each funder's total recent grants to Oklahoma recipients. IRS data publishes on a 1–2 year lag; figures are current through the most recent available filings.