Philanthropy, Voluntarism & Grantmaking Foundations nonprofits in Connecticut
Philanthropy, Voluntarism & Grantmaking Foundations nonprofits in Connecticut. Browse 1,937 public nonprofit profiles. Review organization identities, available filing years, and their complete CharitySense profiles.
Location refers to headquarters recorded in public sources, not an organization’s service area. Classification describes its reported category and does not assess its effectiveness.
Nonprofit profiles
- The Old Oak Trust
EIN 066487646 · Headquarters: WESTPORT, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Old Stones Foundation Inc
EIN 061463304 · Headquarters: STAMFORD, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Optimus Foundation
EIN 273415722 · Headquarters: STRATFORD, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- The Orenstein Family Foundation
EIN 061576951 · Headquarters: DARIEN, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Own Your Future Foundation Inc
EIN 843835920 · Headquarters: SHELTON, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Pakula Foundation
EIN 061601371 · Headquarters: WEST HARTFORD, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Pamela Howard Family Foundation Inc C/o Andersen Tax Llc
EIN 134192506 · Headquarters: OLD GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Park Family Charitable Foundation
EIN 833049826 · Headquarters: WESTON, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Partyka Foundation for Giving Inc
EIN 883294184 · Headquarters: SOUTHINGTON, CT, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- The Patricia M and Robert H Martinsen Foundation
EIN 276961238 · Headquarters: RIDGEFIELD, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Patrina Family Foundation
EIN 208033067 · Headquarters: WEST SIMSBURY, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Paul Rand Charitable Trust C/o Richard Klein
EIN 066433890 · Headquarters: GUILFORD, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Pelletier Family Foundation Inc
EIN 061604304 · Headquarters: Branford, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Per and Astrid Heidenreich Family Foundation
EIN 206382658 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Peter and Thomas DiPietro Foundation Inc C/O Ronald A Soccoli Jr
EIN 822272059 · Headquarters: New Haven, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Peter J Frenkel Foundation Inc
EIN 431963137 · Headquarters: Greenwich, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2018 · Primary form: IRS Form 990-PF
- The Petit Family Foundation Inc
EIN 260627813 · Headquarters: PLAINVILLE, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990
- The Pfleger Foundation Inc
EIN 832797908 · Headquarters: Ridgefield, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Pillars Foundation C/o Jon Speare
EIN 825033265 · Headquarters: WILTON, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Pink Chair Project Inc
EIN 831732190 · Headquarters: WATERTOWN, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- The Pinkus Foundation
EIN 134051212 · Headquarters: Greenwich, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Pitch Foundation
EIN 821541555 · Headquarters: RIVERSIDE, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Pitney Bowes Foundation
EIN 200523317 · Headquarters: STAMFORD, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2023 · Primary form: IRS Form 990-PF
- The Platner Family Foundation Inc
EIN 263381922 · Headquarters: ESSEX, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Pohly Family Foundation
EIN 020710984 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Prasad Family Foundation Inc
EIN 061564486 · Headquarters: GLASTONBURY, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2020 · Primary form: IRS Form 990-PF
- The Pray Family Foundation Inc
EIN 900633482 · Headquarters: WESTPORT, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Princess Ball Inc
EIN 030456008 · Headquarters: DANBURY, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- The Prospector Foundation Inc
EIN 454561656 · Headquarters: RIDGEFIELD, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Ptm Charitable Foundation C/o R Bradford Evans
EIN 133800384 · Headquarters: SOUTHPORT, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Putnam Area Foundation
EIN 201716876 · Headquarters: PUTNAM, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The R & W Family Foundation Inc Co David Rubin
EIN 061531915 · Headquarters: STAMFORD, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2013 · Primary form: IRS Form 990-PF
- The R J Narkis Charitable Trust
EIN 066440259 · Headquarters: MIDDLEBURY, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Raindancer Foundation Inc
EIN 061388352 · Headquarters: Southport, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2013 · Primary form: IRS Form 990-PF
- The Ravengate Foundation
EIN 066492514 · Headquarters: Old Greenwich, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Raymond Falk Foundation
EIN 871863297 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Raymond G & Diana M Roy Charitable Foundation
EIN 061507799 · Headquarters: PLEASANT VALLEY, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Reach Foundation
EIN 752877115 · Headquarters: FARMINGTON, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Red Ribbon Foundation Inc
EIN 061427158 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2014 · Primary form: IRS Form 990-EZ
- The Rein Family Foundation Inc
EIN 061566994 · Headquarters: NEW CANAAN, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Reynolds Foundation
EIN 311679076 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2012 · Primary form: IRS Form 990-PF
- The Richard Riley Conarroe Foundation Inc
EIN 020557485 · Headquarters: Southport, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Ridgefield Foundation
EIN 136093563 · Headquarters: RIDGEFIELD, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2019 · Primary form: IRS Form 990-PF
- The Risc Foundation Inc
EIN 711051630 · Headquarters: NEW HAVEN, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Riversville Foundation C/o Cbiz Advisors Llc
EIN 066504128 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Robert & Audrey Foster Foundation
EIN 061595381 · Headquarters: MILFORD, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Robert & Margaret Patricelli Family Foundation
EIN 061487230 · Headquarters: SIMSBURY, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Robert a & Elizabeth R Jeffe Foundation
EIN 066455294 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Robert and Judith Sturgis Family Foundation
EIN 036090117 · Headquarters: Simsbury, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Robert Black Foundation Trust Dated September 212018
EIN 831970113 · Headquarters: Hartford, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Robert E Marks Foundation
EIN 261289603 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2022 · Primary form: IRS Form 990-PF
- The Robert G and Marianne S Wuelfing Family Foundation Inc
EIN 061484067 · Headquarters: SIMSBURY, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2014 · Primary form: IRS Form 990-PF
- The Rodney M Gould Foundation Inc
EIN 472868299 · Headquarters: RIDGEFIELD, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Rogers Family Foundation
EIN 133789004 · Headquarters: Darien, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Ronald & Grecia Gross Foundation Inc
EIN 222777798 · Headquarters: STAMFORD, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2016 · Primary form: IRS Form 990-PF
- The Rosalind Franklin Society Inc
EIN 205760098 · Headquarters: WESTPORT, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990
- The Rose Family Foundation 42345000056
EIN 473817241 · Headquarters: HARTFORD, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Rosencrans Family Foundation Inc C/o Marjorie Rosencrans
EIN 061469013 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Rotary Club of Old Saybrook Foundation Inc
EIN 061165494 · Headquarters: OLD SAYBROOK, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990
- The Rowland R Strong & Edith H Strong Memorial Scholarship Fund I
EIN 823525708 · Headquarters: OXFORD, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Rukwa Foundation Inc
EIN 861936816 · Headquarters: SUFFIELD, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990
- The Ruscitti Family Foundation Inc
EIN 204886824 · Headquarters: RIDGEFIELD, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2013 · Primary form: IRS Form 990-PF
- The Rust Family Foundation
EIN 541925955 · Headquarters: FAIRFIELD, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Ruth Angeline Whitley Memorial Foundation Inc
EIN 204202689 · Headquarters: Old Greenwich, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Ruth F Savage and Harlow D Savage Jr
EIN 066477882 · Headquarters: HARTFORD, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Ruth Krauss Foundation Inc
EIN 472275469 · Headquarters: BRIDGEPORT, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Ruth W Brown Foundation Sally C Harris Trustee
EIN 061409590 · Headquarters: Greenwich, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Rutledge Family Foundation
EIN 810861760 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Ryan a Martin Charitable Foundation Inc
EIN 471916648 · Headquarters: SOUTH WINDSOR, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2014 · Primary form: IRS Form 990-EZ
- The Sachs Family Foundation
EIN 201991926 · Headquarters: Westport, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Sandler Foundation C/o Morris Sandler
EIN 363588701 · Headquarters: STAMFORD, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2021 · Primary form: IRS Form 990-PF
- The Santoro Family Charitable Foundation
EIN 205676915 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Sara and David Carson Family Foundation Inc
EIN 202977265 · Headquarters: WEST HARTFORD, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Sara B Wardell Family Foundation Inc
EIN 201034179 · Headquarters: SALISBURY, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Sassafras Foundation
EIN 203082522 · Headquarters: BRANFORD, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Schiele Family Foundation Inc
EIN 061566137 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Seelert Foundation Inc
EIN 061601116 · Headquarters: NEW CANAAN, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Seifert Family Foundation
EIN 201277158 · Headquarters: WILTON, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Selander Foundation
EIN 202024998 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2023 · Primary form: IRS Form 990-PF
- The Shanley Family Foundation
EIN 061548816 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Shei'rah Foundation Inc
EIN 311727614 · Headquarters: WARREN, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2014 · Primary form: IRS Form 990-PF
- The Sheldon and Marilyn Fireman Family Foundation
EIN 208006985 · Headquarters: Greenwich, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Shelley and Donald Meltzer Family Foundation
EIN 262419063 · Headquarters: STAMFORD, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Shimkin Foundation
EIN 136022234 · Headquarters: DARIEN, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2022 · Primary form: IRS Form 990-PF
- The Silver City Council No2 Knights of Columbus Charitable Foundation Inc
EIN 061839072 · Headquarters: Newington, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2019 · Primary form: IRS Form 990-PF
- The Silverbird 29 Fund
EIN 822223488 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Sky Bight Foundation Inc
EIN 223514004 · Headquarters: BRISTOL, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Somerset East Foundation Inc Co Michael Romney
EIN 263528021 · Headquarters: NORWALK, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Sonja Foundation
EIN 137371356 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Sooner Foundation
EIN 270187051 · Headquarters: STAMFORD, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Sphinx Foundation Inc
EIN 133798195 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2016 · Primary form: IRS Form 990-PF
- The Stephen & Sharon Bassock Charitable Trust
EIN 237859165 · Headquarters: NEW CANAAN, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Stephen - Sandra Waters Foundation
EIN 222642703 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2018 · Primary form: IRS Form 990-PF
- The Stephen W Craig Family FoundationInc
EIN 454092966 · Headquarters: Greenwich, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Stevek Foundation Inc C/o Cramer & Anderson
EIN 753140355 · Headquarters: DANBURY, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Steven B Grune Family Foundation
EIN 334507299 · Headquarters: Darien, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Stewardship Foundation Inc
EIN 205111306 · Headquarters: NEW HAVEN, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2010 · Primary form: IRS Form 990-PF
- The Stoddard Family Foundation C/o Pamela Stoddard
EIN 476247032 · Headquarters: GUILFORD, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Stone-wood Family Foundation
EIN 880745007 · Headquarters: STAMFORD, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Storr Family Foundation
EIN 061489906 · Headquarters: STAMFORD, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2021 · Primary form: IRS Form 990-PF