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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

#FunderBased inTotal Oklahoma givingGrantsLatest
1The Leona M and Harry B HelmsleyNew York$4.3M32024
2Conrad N Hilton FoundationCalifornia$1.3M22024
3National Fish and Wildlife FoundationDistrict of Columbia$1.1M62023
4Avedis FoundationOklahoma$1.1M82022
5Greater Houston Community FoundationTexas$596K32024
6Kipp FoundationCalifornia$572K22018
7American Journalism Project IncDistrict of Columbia$349K32024
8Houston Zoo IncTexas$331K22023
9Kirkpatrick Foundation IncOklahoma$320K102024
10The Nature ConservancyVirginia$310K112024
11Commonwealth FoundationOklahoma$310K32024
12Environmental Defense Fund IncorporatedNew York$295K52018
13Mary K Chapman FoundationOklahoma$250K22023

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.

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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.