East End nonprofits
Organizations that hold the East End together—donate, volunteer, or join an event.
50 nonprofits
Health & Human Services
7 nonprofits
Hospitals, hospice, crisis care.
Health · Southampton
Stony Brook Southampton Hospital FoundationFunds the only hospital serving the South Fork year-round.
Health · Sagaponack
Center for Therapeutic Riding of the East EndTransforming lives through the therapeutic power of horses.
Health · East Hampton
Phoenix House New YorkSubstance use treatment and recovery services, with two East End programs: an outpatient center on Springs-Fireplace Road in East Hampton and a residential program for young men in Wainscott.
Health · East Hampton
The RetreatDomestic violence services, shelter, and prevention education on the East End.
Health · Sag Harbor
Fighting ChanceFree cancer counseling and patient navigation for East End residents.
Health · Westhampton Beach
East End HospiceCompassionate end-of-life care, bereavement support, and Camp Good Grief on the East End.
Health · Riverhead
Family Service LeagueSuffolk County social services agency with East End offices providing mental health and family support.
Hunger & Shelter
3 nonprofits
Food pantries and homeless outreach.
Hunger · Southampton
Heart of the HamptonsFood pantry and emergency assistance for East End families in need.
Hunger · Riverhead
East End Food InstituteEast End Food strengthens our community by building a profitable and sustainable local food system, actively supporting farmers and food producers to thrive, and ensuring access to nourishing local food for everyone.
Hunger · Riverhead
Maureen's Haven Homeless OutreachEmergency shelter and services for East End homeless individuals.
Education & Literacy
12 nonprofits
Libraries, schools, after-school programs.
Education · Southampton
Rogers Memorial LibraryFree public library serving Southampton Village.
Education · Bridgehampton
Children's Museum of the East EndHands-on exhibits and programs that spark curiosity in children across the East End.
Education · Bridgehampton
Hampton Library in BridgehamptonFree library and community hub serving Bridgehampton and the surrounding hamlets.
Frances Benjamin Johnston, ca. 1915 / Library of Congress (Public domain) Education · East Hampton
East Hampton LibraryFree public library serving East Hampton, with the Long Island Collection of regional history.
Education · East Hampton
i-tri GirlsBuilds self-esteem and resilience in adolescent girls through triathlon training and mentoring.
Education · East Hampton
Project MOSTAfter-school and summer enrichment programs for K–8 students in East Hampton and Springs.
Education · Amagansett
Amagansett Free LibrarySmall free public library serving the hamlet of Amagansett.
Education · Montauk
Camp SoulGrowRuns one-off workshop days for children aged 7 to 12 with local artists and business owners as their mentors, to build self-esteem and connect them to their community.
Education · Montauk
Montauk LibraryFree public library serving Montauk year-round residents and visitors.
Photo: John Jermain Memorial Library (CC BY-SA 4.0), via Wikimedia Commons Education · Sag Harbor
John Jermain Memorial LibrarySag Harbor's free public library, in service since 1910.
Education · Hampton Bays
Hampton Bays Public LibraryFree public library serving the hamlet of Hampton Bays.
Education · Riverhead
Cornell Cooperative Extension of Suffolk CountyConnects Suffolk residents to Cornell research in agriculture, marine science, and 4-H.
Animal Welfare
6 nonprofits
Shelters and wildlife rescue.
Animal Welfare · Sagaponack
Gimme Shelter Animal RescueFoster-based dog rescue founded in Sagaponack in 2011 — pulls dogs from high-kill shelters nationwide, places them in East End foster homes until adoption. No public facility; meets adopters at foster homes and events.
Animal Welfare · East Hampton
Animal Rescue Fund of the HamptonsRescues cats and dogs, provides quality care, and offers sanctuary until loving homes can be found.
Animal Welfare · East Hampton
Wags & Walks — Hamptons Pup-UpLA and Nashville dog rescue that spends each summer on the East End: adoptable dogs brought up from overcrowded Southern shelters, placed through pop-up adoption events, free fostering (supplies and vet care covered), and community partnerships. 2026 season runs July 7 to September 7, kicked off at The Baker House; adoption events run at Main Beach and venues across the Hamptons — see their New York calendar.
Animal Welfare · Hampton Bays
Evelyn Alexander Wildlife Rescue CenterRescues, rehabilitates, and releases injured native wildlife on the East End.
Animal Welfare · Hampton Bays
Southampton Animal Shelter FoundationNo-kill animal shelter serving the East End since 2009.
Animal Welfare · Peconic
North Fork Animal Welfare LeagueRuns the municipal animal shelters for the Towns of Southold and Riverhead, sheltering and rehoming dogs and cats — adoption, fostering, and a volunteer program (application on the site) that includes shelter dog walking.
Heritage & History
6 nonprofits
Historical societies and cultural memory.
DanTD / Wikimedia Commons (CC BY-SA 4.0) Heritage · Southampton
Southampton History MuseumPreserves and presents the history of Southampton through its campus of historic buildings.
Heritage · East Hampton
East Hampton Historical SocietyStewards five historic sites and museums preserving East Hampton's heritage.
Heritage · Sag Harbor
Eastville Community Historical SocietyPreserves the African American, Native American, and immigrant heritage of Sag Harbor's Eastville neighborhood.
CaptJayRuffins / Wikimedia Commons (CC BY-SA 4.0) Heritage · Sag Harbor
Sag Harbor Whaling and Historical MuseumPreserves Sag Harbor's whaling-era heritage in the historic Hannibal French house.
Heritage · Shelter Island
Shelter Island Historical SocietyThe Shelter Island History Museum collects and preserves the artifacts, records and stories that define the island's unique history. We welcome and connect our community by exploring our shared history through exhibits, research, educational programs and performances.
Photo: DanTD (CC BY-SA 4.0), via Wikimedia Commons Heritage · Shelter Island
Sylvester Manor Educational FarmOur mission is to Preserve, Cultivate and Share historic Sylvester Manor.
Arts & Culture
15 nonprofits
Museums, theaters, music, and film.
Arts · Southampton
Southampton Arts CenterSouthampton Arts Center is committed to building community through the arts. It presents and produces inspiring, inclusive, socially and regionally relevant programs across all disciplines, welcoming, connecting, and collaborating with diverse members of New York's East End community and beyond.
Arts · Southampton
Southampton Cultural CenterVisual and performing arts programming, classes, and exhibitions for the Southampton community.
Americasroof / Wikimedia Commons (CC BY-SA 3.0) Arts · Water Mill
Parrish Art MuseumCollecting, preserving, and exhibiting the art of the East End.
0wl464 / Wikimedia Commons (CC BY-SA 4.0) Arts · Water Mill
The Watermill CenterRobert Wilson's laboratory for the arts and humanities — residencies, exhibitions, and education.
Arts · Sagaponack
The Madoo ConservancyRobert Dash's two-acre artist's garden in Sagaponack, open to the public.
Arts · Wainscott
LTV StudiosEast Hampton's public-access television station and community media center — five production studios, a black-box soundstage, and an archive of roughly 25,000 tapes of the town filming itself.
Daniel Gonzalez / Guild Hall of East Hampton, via Wikimedia Commons (CC BY-SA 4.0) Arts · East Hampton
Guild HallCultural center presenting visual art, theater, and education on the East End since 1931.
Arts · East Hampton
Hamptons International Film FestivalCelebrating independent film through year-round programs and the annual festival in East Hampton.
Americasroof / Wikimedia Commons (CC BY-SA 3.0) Arts · East Hampton
LongHouse ReserveSixteen-acre sculpture garden and arts education center founded by Jack Lenor Larsen.
Americasroof (English Wikipedia), via Wikimedia Commons (CC BY-SA 2.5) Arts · East Hampton
Pollock-Krasner House and Study CenterPreserving the home and studio of Jackson Pollock and Lee Krasner as a National Historic Landmark.
Arts · Sag Harbor
Bay Street TheaterYear-round professional theater and arts education in Sag Harbor.
Photo: CaptJayRuffins (CC BY-SA 4.0), via Wikimedia Commons Arts · Sag Harbor
Sag Harbor Cinema Arts CenterRestored historic Main Street cinema and nonprofit film arts center.
Arts · Sag Harbor
The ChurchThe mission of The Church is to foster creativity on the East End and to honor the living history of Sag Harbor as a maker village.
Arts · Shelter Island
Perlman Music ProgramItzhak Perlman's intensive summer residency for exceptionally gifted young string musicians on Shelter Island.
Arts · Westhampton Beach
Westhampton Beach Performing Arts CenterYear-round live performing arts venue serving the western East End.
Latino Community
1 nonprofit
Services centered on Latino residents and families.
Hispanic/Latino · East Hampton
OLA of Eastern Long IslandAdvocacy, legal defense, and community building for Latino families on the East End.
10 nonprofits
Conservation & Land
8 nonprofits
Stewards of the bays, woods, and ponds.
Conservation · Southampton
Peconic Land TrustConserving Long Island's working farms, natural lands, and heritage.
Conservation · Bridgehampton
South Fork Natural History MuseumConnects people to the natural environment of the South Fork through exhibits and programs.
Conservation · East Hampton
Friends of Georgica Pond FoundationRestoring and protecting the water quality of Georgica Pond in East Hampton.
Conservation · Montauk
Concerned Citizens of MontaukGrassroots conservation group protecting Montauk's water, land, and wildlife.
Conservation · Sag Harbor
Friends of the Long Pond GreenbeltProtects 1,100 acres of contiguous open space between Sag Harbor and Bridgehampton.
Conservation · Quogue
Quogue Wildlife Refuge305-acre nature preserve, native wildlife complex, and environmental education center.
Conservation · Hampton Bays
Peconic BaykeeperOn-the-water advocate protecting Long Island's South Shore and East End estuaries.
Conservation · Southold
Group for the East EndProtecting the natural environment of eastern Long Island through education, advocacy, and stewardship.
Civic & Community
2 nonprofits
Village improvement and regional coalitions.
Civic · East Hampton
Ladies Village Improvement SocietyBeautifying and supporting East Hampton Village since 1895 — trees, gardens, scholarships.
Civic · Southold
All for the East EndCoalition supporting nonprofits across the five East End towns.