Environment Grants in Connecticut

108 foundations fund environment programs in Connecticut. See who they are, what they give, and how to reach them.

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These foundations have a track record of funding environment work in Connecticut, based on IRS 990 grant data. Use the list below to find funders aligned with your mission, then sign up free to see how well your nonprofit fits each one.

Open Grant Opportunities

Live programs funding environment in Connecticut that your nonprofit can apply to now.

Open nowCloses in 3 days (Sep 30, 2026)

Ibis Charities Foundation Grant Program

From Ibis Charities Foundation

EducationFamily and social servicesArt and culture+2 more

Who can apply: Applicants must be 501(c)(3) charities serving Palm Beach County residents, in good standing with the IRS, current with the Florida Secretary of State, and have filed a solicitation statement with the Florida Department of Agriculture and Consumer Services. Audited financial statements are required. Charities located outside Palm Beach County, individuals, private foundations, religious or politically affiliated organizations, debt reduction or operating deficits, capital projects, and bridge funding are not eligible. National organizations must apply through a local chapter with a local board of directors and a project or program benefiting Palm Beach County residents.

Open nowCloses in 4 days (Oct 1, 2026)

Grant Application

From Belvedere Foundation

educationcommunity outreachhealthy living+3 more

Who can apply: Applicants must have an actual location in Marin County, California and be within 25 miles of the 94920 zip code. Grants must support the foundation's mission of improving the quality of life for Belvedere and Tiburon Peninsula residents. Personal needs are not funded. Matching funding is viewed favorably, especially for projects beyond Belvedere city limits.

Open nowCloses in 4 days (Oct 1, 2026)

Belvedere Community Foundation Grant Program

From Belvedere Foundation

EducationCommunity outreachHealthy living+6 more

Who can apply: Grant recipients must have an actual location in Marin County, California, be within 25 miles of ZIP code 94920, and support the foundation's mission of improving the quality of life for Belvedere and Tiburon Peninsula residents. The foundation does not provide grants for personal needs. Projects outside the greater Tiburon Peninsula area are generally not eligible for multi-year commitments or grants. Applications with matching funding sources are viewed favorably, especially for projects beyond Belvedere city limits.

Open nowCloses in 4 days (Oct 1, 2026)Award: $500 – $5K

Competitive Grants — General Application

From Community Foundation of Middlesex County

Community enrichment (arts, culture, history)Community healthEconomic security and opportunity+8 more

Who can apply: Applicants must be 501(c)(3) nonprofits or 170(c)(1) governmental entities and directly serve one or more towns in Middlesex County, Connecticut. Applicants must be current on grant evaluations for previous CFMC competitive grants. Schools, healthcare organizations, government entities, fiscal-sponsored groups, faith-based organizations, and collaborations generally apply for budget-enhancing project support. Organizations are generally limited to one application per grant calendar year as the primary applicant. Grants cannot fund individuals, debt, capital improvements, endowments, fundraising campaigns, regranting, political purposes, or retroactive activities.

Open nowRolling / open intake

Georgia-Pacific Community Grants

From Georgia-Pacific Foundation

EducationSTEMLiteracy+12 more

Who can apply: Organizations working in the funder’s stated pillars may apply; the site references nonprofits, public schools, fire departments, and other community partners. Additional eligibility details are not visible in the provided content.

Open nowCloses Nov 11, 2026Award: $1K – $5K

Annual Environmental Grants

From Rockfall Foundation

Environmental preservationEnvironmental conservationEnvironmental restoration+6 more

Who can apply: Eligible applicants include 501(c)(3) nonprofits, towns, and schools. Organizations or projects must be based in one of the listed focus towns. Projects focused on the Connecticut River corridor or Long Island Sound may be considered if they demonstrate impact in at least one focus town. Applicants that do not independently meet the eligibility requirements may partner with an eligible entity as a co-applicant. Projects should be completed within 12 months and begin no later than July 1, 2027. A match of at least 25% of the grant request is required, consisting of cash, materials, or in-kind professional services; volunteer hours do not qualify.

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Deadlines and program details come from public sources and can change. Always confirm on the funder's official site before applying.

Largest Environment in Connecticut Foundations

NEW VENTURE FUND

WASHINGTON, DC

Annual Giving

$359.6M

Total Assets

$624.9M

Median Grant

$120K

C05National
THE TRUST FOR PUBLIC LAND

SAN FRANCISCO, CA

Annual Giving

$151.4M

Total Assets

$432.7M

Median Grant

$66K

C500National
WINDWARD FUND

WASHINGTON, DC

Annual Giving

$137.7M

Total Assets

$432.7M

Median Grant

$100K

C30National
NATIONAL PARK FOUNDATION

WASHINGTON, DC

Annual Giving

$81.9M

Total Assets

$560.6M

Median Grant

$50K

C12National
THE NATURE CONSERVANCY

ARLINGTON, VA

Annual Giving

$67.8M

Total Assets

$10.1B

Median Grant

$25K

C32National
LEAGUE OF CONSERVATION VOTERS EDUCATION FUND

WASHINGTON, DC

Annual Giving

$54.8M

Total Assets

$37.2M

Median Grant

$45K

C013National
RESOURCES LEGACY FUND

SACRAMENTO, CA

Annual Giving

$43.9M

Total Assets

$151.9M

Median Grant

$50K

C30Regional
MULTIPLIER

SAN FRANCISCO, CA

Annual Giving

$35.8M

Total Assets

$63.4M

Median Grant

$47K

C60National
NATIONAL NETWORK OF ABORTION FUNDS INC

BEAVERTON, OR

Annual Giving

$18.3M

Total Assets

$44.8M

Median Grant

$59K

C99ZNational
NATIONAL ASSOCIATION OF CONSERVATION DISTRICTS

WASHINGTON, DC

Annual Giving

$17.7M

Total Assets

$7.3M

Median Grant

$40K

C030National
THE SUNRISE PROJECT INC

WILMINGTON, DE

Annual Giving

$17.3M

Total Assets

$14M

Median Grant

$200K

C60National
THE RECYCLING PARTNERSHIP INC

WASHINGTON, DC

Annual Giving

$15.5M

Total Assets

$46.1M

Median Grant

$81K

C27National
CLEAN AND PROSPEROUS AMERICA

TUMWATER, WA

Annual Giving

$15M

Total Assets

$38K

Median Grant

$25K

C35National
REALTY GIFT FUND

SANTA FE, NM

Annual Giving

$13.6M

Total Assets

$13.1M

Median Grant

$27K

C34National
SUSTAINABLE MARKETS FOUNDATION

NEW YORK, NY

Annual Giving

$13.2M

Total Assets

$51.2M

Median Grant

$25K

C30National
PATAGONIAORG

VENTURA, CA

Annual Giving

$13.2M

Total Assets

—

Median Grant

$15K

C19National
NATIONAL ARBOR DAY FOUNDATION

LINCOLN, NE

Annual Giving

$11.6M

Total Assets

$136.3M

Median Grant

$38K

C500National
ENVIRONMENTAL DEFENSE FUND INCORPORATED

NEW YORK, NY

Annual Giving

$7.9M

Total Assets

$520.4M

Median Grant

$30K

C600National
NATIONAL AUDUBON SOCIETY INC

NEW YORK, NY

Annual Giving

$7.5M

Total Assets

$641.3M

Median Grant

$12K

C300National
SOCIAL & ENVIRONMENTAL ENTREPRENEURS (SEE) INC

CALABASAS, CA

Annual Giving

$6.9M

Total Assets

$103.2M

Median Grant

$43K

C05National
CLIMATE JOBS NATIONAL RESOURCE CENTER INC

NEW YORK, NY

Annual Giving

$6.1M

Total Assets

$20.1M

Median Grant

$147K

C60Regional
SUSTAINABLE ENERGY UTILITY INC

DOVER, DE

Annual Giving

$5.7M

Total Assets

$162.6M

Median Grant

$73K

C35Regional
NATIONAL MARINE SANCTUARY FOUNDATION

SILVER SPRING, MD

Annual Giving

$5.6M

Total Assets

$15.5M

Median Grant

$26K

C113National
LAND TRUST ALLIANCE INC

WASHINGTON, DC

Annual Giving

$5.3M

Total Assets

$24.7M

Median Grant

$20K

C033National
NATURAL RESOURCES DEFENSE COUNCIL INC

NEW YORK, NY

Annual Giving

$5.3M

Total Assets

$657.2M

Median Grant

$20K

C300National

Environment grants by state

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