Free funder guide · Oklahoma · Last checked 16 October 2026
Which Oklahoma environmental funders actually accept applications
Most private foundations in Oklahoma have already told the IRS they won't read your proposal. This page explains how to spot them, and lists 10 secular funders of environmental and conservation work in Oklahoma that do take applications, with what they fund, what they have given, and when they next open.
Of the 147 open Oklahoma foundations, 63 made an environmental grant in their latest filing, and most of those (50 of the 63) also gave to a church, a YMCA, a faith-based school or another religious group. After I read every remaining grant list, two Oklahoma private foundations are on this list, all small and local.
From my own read of IRS filings, September 2026
In Oklahoma, 285 of the 432 private foundations with $1 million or more in assets tick the box on their tax return saying they don't accept unsolicited requests. That is 66%.
That leaves 147 larger Oklahoma foundations that say they will read an application. It is a higher share of closed doors than in Kansas (58%, 210 of 363), and a lower share than in Texas (71%, 2,519 of 3,568) and Missouri (76%, 1,178 of 1,559), counted the same way.
How I counted: every private non-operating foundation with an Oklahoma address on the IRS Exempt Organizations Master File (September 2026 release) reporting assets of $1 million or more, checked against its most recent e-filed Form 990-PF (mostly tax years 2024 and 2025). Operating foundations, which mostly run their own programs, are left out, as they were for Texas, Kansas and Missouri. Counting them too gives 68% (317 of 468).
What the checkbox means
One small box on the tax return tells you whether to bother.
Every private foundation files Form 990-PF with the IRS each year. Part XIV, line 2 of that return has a checkbox. A foundation that ticks it is telling the IRS, in writing, that it chooses its grantees itself. A proposal sent to it is usually wasted work.
"Check here if the foundation only makes contributions to preselected charitable organizations and does not accept unsolicited requests for funds."Form 990-PF, Part XIV, line 2
A foundation that leaves the box empty has to fill in lines 2a to 2d instead: who receives applications, what form they should take, any deadlines, and any limits on who or what it funds. For many small family foundations, those four lines are the only published guidelines they have.
The box does not tell you whether a foundation funds your kind of work. For that, read line 3a, the list of grants it actually paid. Check both before you write a letter of inquiry. Any foundation's return can be read free on ProPublica Nonprofit Explorer.
10 funders
Open to applications, and funding environmental work in Oklahoma.
Every funder below is secular, says it accepts applications (on its website or its tax return), and has paid grants to environmental or conservation groups in its most recent filing. Government programs are the exception: they file no tax return. Community foundations are listed by the program that fits environmental groups. Grant examples come from each funder's latest IRS filing unless the funder's own site is named.
Verified date on the funder's own site on 16 Oct 2026Expected based on last cycle; next not yet postedFiling only no website; from the tax return, confirm firstCheck site next date not posted; open their page
Statewide and regional public grantmakers
01
Oklahoma Forestry Services: Urban and Community Forestry Assistance Grants
Oklahoma City · statewide
Federal pass-through grants for urban and community forestry: native tree planting, storm readiness and recovery, and other tree projects. Local governments, tribes, nonprofits and schools can apply; volunteer tree groups and neighborhood associations that are not 501(c)(3)s must partner with a nonprofit or local government.
Typical grant
$5,000 to $50,000 for one year, with no match required (2026 request for applications). Applicants need both an EIN and a federal Unique Entity Identifier (UEI).
Next deadline
October 23, 2026, 5 p.m. Verified.
How to apply
Application as set out in the 2026 request for applications, linked from the announcement.
Oklahoma Tourism and Recreation Department: Recreational Trails Program
Oklahoma City · statewide
Federal money for building and maintaining recreational trails. Private 501(c)(3) organizations such as trail user groups and conservation groups can apply, along with public agencies and tribes.
Typical grant
Up to $300,000 in federal funds per project, on an 80/20 match; the sponsor pays costs first and is reimbursed (2027 application guide).
Next deadline
Fiscal 2027 cycle: request your application link by December 8, 2026, 4 p.m.; applications due December 15, 2026, 4:30 p.m. Verified.
How to apply
Online application; the link is sent on request, following OTRD's 2027 application guide.
Bureau of Reclamation: WaterSMART Cooperative Watershed Management Program
Oklahoma and 18 other western states
Funding for watershed groups to organize, write a watershed restoration plan and design projects. An existing watershed group incorporated as a nonprofit can apply, and a nonprofit can apply to sponsor a new group.
Typical grant
Up to $100,000 a year for up to three years, with no cost share (its site).
Next deadline
Four closing dates under the current notice: October 7, 2026 (passed), February 24, 2027, September 1, 2027 and February 15, 2028. Next: February 24, 2027 Verified.
How to apply
Apply to funding opportunity R26AS00349 through Grants.gov; the program page links a recorded July 2026 applicant webinar.
Pays for qualified conservation nonprofits, local governments and tribes to buy private forest land outright and keep it as a community forest with public access. Conservation easements are not eligible.
Typical grant
Up to $600,000, covering at most 50% of project costs with a 50% non-federal match (its site).
Next deadline
Fiscal 2026 round: applications were due to state foresters by October 13, 2026, and that round has closed. The next round is not posted yet Check site.
How to apply
Notice of funding opportunity on Grants.gov; the application goes to the state forester (in Oklahoma, Oklahoma Forestry Services).
National Fish and Wildlife Foundation: Southern Plains Grassland Program
Washington, DC · all of Oklahoma
Voluntary grassland conservation on working ranches across the southern Great Plains: better grazing management, reseeding, removing woody invaders, prescribed fire, prairie-chicken and pronghorn habitat, and technical help for ranchers. All of Oklahoma is in its focus area, and nonprofits are eligible.
Typical grant
Typically $150,000 to $400,000 over one to three years, with at least a 1:1 match (2026 request for proposals). Oklahoma grants in NFWF's filing for the year to September 2025, which does not name the program: The Learning Center at the Euchee Butterfly Farm $64,519 (grassland restoration for monarchs), Oklahoma Association of Conservation Districts $47,500, Oklahoma Conservation Commission $26,614 (removing cedar to restore grassland).
Next deadline
About mid-November 2026 Expected. The 2026 round took full proposals by November 13, 2025, with awards in March 2026; the 2027 request for proposals is not posted yet.
How to apply
Full proposal in NFWF's Easygrants system; groups short on match are asked to contact NFWF before applying.
National Fish and Wildlife Foundation: Five Star and Urban Waters Restoration
Washington, DC · Oklahoma priority: Grant, Kay and Murray counties
Community partnerships that restore wetlands, streams and riparian habitat, build nature-based stormwater projects and involve local residents in the work. Each project needs several local partners. Oklahoma's priority area in the 2026 request for proposals is Grant, Kay and Murray counties.
Typical grant
$30,000 to $150,000, 30 to 40 grants a year, with at least a 1:0.75 match to be competitive (2026 request for proposals).
Next deadline
About June 2027 Expected. The 2026 full proposals were due June 4, 2026; the 2027 request is not posted yet.
Oklahoma City Community Foundation: Parks and Public Space Initiative
Oklahoma City · Oklahoma City metro area
Grants that improve Oklahoma City's parks, trails, school grounds and community spaces, building on the Margaret Annis Boys Trust for beautifying the city's public landscapes. Neighborhood groups, 501(c)(3) nonprofits and local government agencies can apply.
Typical grant
Up to $40,000 (its site). Winter 2026 awards included Metro Park Neighborhood Association $25,000 (native, pollinator-friendly plantings on Linwood Boulevard medians) and Oklahoma City Beautiful $15,000 (75 shade trees on school grounds).
Next deadline
Next cycle: guidelines and application open October 20, 2026; letter of intent due November 19, 2026, 5 p.m.; application due December 10, 2026, 5 p.m. Verified. Decisions by the end of February 2027.
How to apply
Letter of intent, then application, both through OCCF's online grant portal using the access code in the grant guidelines.
Communities Foundation of Oklahoma: Tahlequah Community Fund
Tahlequah · Tahlequah area
A local fund run by a volunteer advisory board. Conservation and community beautification are among its named interests, alongside arts, education, health and human services. It has also announced a new matching grant of up to $50,000 for a physical improvement such as green or recreational space.
Typical grant
Regular grants are currently limited to $3,500 or less (its site).
Next deadline
Once a year, due the last Friday in September; the 2026 cycle has closed. Next deadline about September 24, 2027 Expected; application details are announced in August.
How to apply
Application through Communities Foundation of Oklahoma when the August announcement goes out; follow-up reports are required.
No website; everything here comes from its 2025 tax filing. At least 95 percent of its giving goes to charities located in Tulsa, including park upkeep and nature programming.
Typical grant
Five grants totaling $110,000 in 2025. Green-space example: River Parks Foundation $3,000 (maintenance of specified parks).
Next deadline
April 1 each year Filing only.
How to apply
A letter describing your organization and how the money would be used, to Nieta Pinkerton, 1502 S. Boulder 21-F, Tulsa, OK 74119.
No website; everything here comes from its 2025 tax filing. It funds schools, medicine and human services, and its latest list includes a wildlife rescue ranch in Rogers County.
It is not exhaustive and it is not a ranking. Deadlines and guidelines change, so open each funder's own page before you start. Grants are competitive, and past grant sizes describe what a funder gave, not what it will give you. I list secular funders only.
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