Nonprofits in Connecticut
Nonprofits in Connecticut. Browse 26,993 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 Kathryn M and Ronald J Herman Jr Charitable Foundation
EIN 206432249 · Headquarters: FAIRFIELD, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Kellie Duggan Foundation Inc the Kellie Duggan Foundation Inc
EIN 451715306 · Headquarters: GUILFORD, CT, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- The Kelly Family Foundation Inc
EIN 812662041 · Headquarters: SOUTHPORT, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Kendall Family Foundation
EIN 260726065 · Headquarters: WESTON, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Kennedy Center Auxiliary Inc
EIN 061011300 · Headquarters: Trumbull, CT, US · Arts, Culture & Humanities · Latest available filing year: 2022 · Primary form: IRS Form 990-N
- The Kennedy Collective
EIN 060709295 · Headquarters: Trumbull, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- The Kenneth Joyce Foundation Inc C/o Michael Joyce
EIN 264728247 · Headquarters: ROCKY HILL, CT, USA · Education · Latest available filing year: 2025 · Primary form: IRS Form 990
- The Kenneth M Seymour Jr Scholarship Trust
EIN 467222490 · Headquarters: NORWICH, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Keren Foundation for Children Inc C/o Dr Jonathan Alexander
EIN 061600761 · Headquarters: NORWALK, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2022 · Primary form: IRS Form 990-EZ
- The Kestrel Foundation
EIN 134007198 · Headquarters: WASHINGTON, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Kidnetic Clubhouse Inc
EIN 461735161 · Headquarters: SHELTON, CT, USA · Recreation & Sports · Latest available filing year: 2015 · Primary form: IRS Form 990
- The Kiev Foundation
EIN 237070393 · Headquarters: WILTON, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2018 · Primary form: IRS Form 990-PF
- The Kiev Foundation Inc
EIN 813785037 · Headquarters: WILTON, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Kimberly Jill Hackman Foundation Inc
EIN 993573582 · Headquarters: STAMFORD, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Kindconnect Inc
EIN 412391281 · Headquarters: Watertown, CT, USA · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The King Street Volunteer Fire Company Inc
EIN 223126408 · Headquarters: DANBURY, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- The Kiwanis Foundation of Middletown Inc
EIN 320234846 · Headquarters: MIDDLETOWN, CT, USA · Education · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ
- The Knights of Columbus Home Association of Bethel Conn Inc
EIN 222542757 · Headquarters: Bethel, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- The Knights of Columbus Museum Inc
EIN 061590283 · Headquarters: NEW HAVEN, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990
- The Knot Community Development Corporation
EIN 264034846 · Headquarters: Avon, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2021 · Primary form: IRS Form 990-N
- The Koch Ellis Fund C/o Charles Ellis Trustee
EIN 222505228 · Headquarters: NEW HAVEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Korean Language and Cultural Education Institute Incorporated
EIN 743221430 · Headquarters: Glastonbury, CT, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- The Korobkin Foundation Inc Co Nancy Korobkin
EIN 133985413 · Headquarters: RIVERSIDE, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Krantz 501 (C) (3) Trust C/o Christopher Krantz
EIN 222788865 · Headquarters: DARIEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Kundalini Research Fdn Ltd
EIN 132677006 · Headquarters: STAMFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Kurt Forrest Foundation Inc C/o Renate Kurowski-Cardello
EIN 061549428 · Headquarters: Stamford, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Kurzrok Foundation Inc
EIN 061367091 · Headquarters: GREENWICH, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Laboiteaux - Sharp Family Foundation
EIN 311346390 · Headquarters: ESSEX, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Lacroix Murdock Post No 585 Vfw of the United States
EIN 060789758 · Headquarters: Wallingford, CT, US · Public & Societal Benefit · Latest available filing year: 2013 · Primary form: IRS Form 990-N
- The Lake Basile Association
EIN 452052177 · Headquarters: GRANBY, CT, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- The Lake Waramaug Association Inc
EIN 066178754 · Headquarters: NEW PRESTON, CT, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- The Lakeville Hose Company No 1 Inc
EIN 060899132 · Headquarters: LAKEVILLE, CT, USA · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2022 · Primary form: IRS Form 990
- The Lanegate Foundation
EIN 270186639 · Headquarters: STAMFORD, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Langdon Foundation
EIN 260004951 · Headquarters: Southington, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Lanzillotti Family Foundation I
EIN 334652844 · Headquarters: STAMFORD, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Lapin Foundation
EIN 223200990 · Headquarters: Stamford, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Last Day Foundation Inc
EIN 271962272 · Headquarters: FAIRFIELD, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Last Green Valley Inc the Last Green Valley Inc
EIN 061418894 · Headquarters: DANIELSON, CT, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990
- The Laugeni Family Foundation
EIN 061624752 · Headquarters: WEST HAVEN, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Laurel Camps Foundation Inc
EIN 831697737 · Headquarters: WESTPORT, CT, US · Youth Development · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- The Laverack Family Foundation
EIN 562307477 · Headquarters: OLD GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Lawrence a Bossidy Foundation
EIN 061188527 · Headquarters: RIDGEFIELD, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Lawrence J Portell and Natalie D Portell Foundation Inc
EIN 061508183 · Headquarters: NEW MILFORD, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Leadership University Inc
EIN 920815346 · Headquarters: WATERBURY, CT, USA · Youth Development · Latest available filing year: 2024 · Primary form: IRS Form 990
- The Leads Foundation C/o Colin Gershon Esq
EIN 060933954 · Headquarters: NEW HAVEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Learn Project Inc
EIN 020635478 · Headquarters: OLD LYME, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- The Learning Center at Piper's Hill Inc
EIN 237392118 · Headquarters: STAMFORD, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990
- The Learning Clinic
EIN 061023016 · Headquarters: BROOKLYN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- The Lee Family Foundation
EIN 061563501 · Headquarters: OLD GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2023 · Primary form: IRS Form 990-PF
- The Legacy Foundation of Hartford
EIN 453908154 · Headquarters: HARTFORD, CT, USA · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990
- The Legacy Theatre Inc
EIN 452855557 · Headquarters: BRANFORD, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990
- The Lehrman Institute
EIN 237218534 · Headquarters: GREENWICH, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Leir Foundation Inc
EIN 061466481 · Headquarters: RIDGEFIELD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Leir Retreat Center Inc
EIN 134313639 · Headquarters: RIDGEFIELD, CT, USA · Youth Development · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Lenore & Howard Klein Foundation Inc
EIN 133673818 · Headquarters: Greenwich, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Leopold Swergold Family Foundation
EIN 311627161 · Headquarters: WESTPORT, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2018 · Primary form: IRS Form 990-PF
- The Leslie and Sheila Klein Foundation Inc
EIN 873616373 · Headquarters: NEW CANAAN, CT, USA · Medical Research · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Levi E Coe Library Association
EIN 066045521 · Headquarters: Middlefield, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- The Lfl Institute Inc
EIN 394183286 · Headquarters: Stamford, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- The Libby Holman Foundation Inc C/o Lloyd Clareman
EIN 116037769 · Headquarters: WESTPORT, CT, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-PF
- The Licia & Mason Beekley Community Library Inc
EIN 222536042 · Headquarters: NEW HARTFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- The Life Center of Connecticut Inc
EIN 237105437 · Headquarters: HARTFORD, CT, USA · Mental Health & Crisis Intervention · Latest available filing year: 2024 · Primary form: IRS Form 990
- The Lighthouse Voc-ed Center Inc
EIN 061352951 · Headquarters: OLD MYSTIC, CT, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990
- The Limpe Foundation
EIN 133639369 · Headquarters: GREENWICH, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Lincoln College of New England Foundation Inc
EIN 060955189 · Headquarters: Southington, CT, US · Education · Latest available filing year: 2018 · Primary form: IRS Form 990-N
- The Lincoln Institute
EIN 061605946 · Headquarters: GREENWICH, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2014 · Primary form: IRS Form 990-PF
- The Lincoln Society Inc
EIN 273014354 · Headquarters: NORTH HAVEN, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990
- The Links Inc Milford Ct Chapter
EIN 061167530 · Headquarters: Milford, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- The Lions Club of Groton Inc
EIN 203157041 · Headquarters: Mystic, CT, US · Education · Latest available filing year: 2022 · Primary form: IRS Form 990-N
- The Lions Club of Hamden Incorporated
EIN 066068757 · Headquarters: North Haven, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- The Lions Club of Tolland Inc
EIN 222474943 · Headquarters: Tolland, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- The Lisbon Fire Department Inc
EIN 320408805 · Headquarters: LISBON, CT, USA · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2024 · Primary form: IRS Form 990
- The Litchfield Community Writers Group Inc
EIN 852491740 · Headquarters: GLASTONBURY, CT, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- The Litchfield Scholarship Association Inc
EIN 066058295 · Headquarters: LITCHFIELD, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Little Pink Shelter Inc
EIN 454150617 · Headquarters: WESTPORT, CT, USA · Animal Related · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- The Little Warriors a Brian Bill Project Inc
EIN 455311054 · Headquarters: NEW CANAAN, CT, US · Youth Development · Latest available filing year: 2023 · Primary form: IRS Form 990-N
- The Littman Family Foundation Inc
EIN 650631633 · Headquarters: BETHLEHEM, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Living Well Ministries Inc
EIN 394768055 · Headquarters: Fairfield, CT, US · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- The Lombardo Foundation Inc C/o Cummings & Lockwood
EIN 061512354 · Headquarters: STAMFORD, CT, USA · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Long Family Foundation
EIN 311634845 · Headquarters: New Canaan, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2018 · Primary form: IRS Form 990-PF
- The Long Island Sound Foundation Inc
EIN 061332276 · Headquarters: ESSEX, CT, USA · Environment · Latest available filing year: 2015 · Primary form: IRS Form 990-EZ
- The Long Ridge School Inc
EIN 060688031 · Headquarters: STAMFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- The Loomis Institute D/b/a the Loomis Chaffee School
EIN 060653119 · Headquarters: WINDSOR, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990
- The Louis a Emily J & John J Buonani Family Foundation Inc
EIN 061413694 · Headquarters: MERIDEN, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2018 · Primary form: IRS Form 990-PF
- The Lowenthal Family Foundation Inc
EIN 203257784 · Headquarters: Norwalk, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Lt Jon C Ladda Memorial Foundation
EIN 061525753 · Headquarters: FARMINGTON, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2023 · Primary form: IRS Form 990-PF
- The Luke O'brien Foundation
EIN 066464996 · Headquarters: WILTON, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2012 · Primary form: IRS Form 990-PF
- The Lurito Family Foundation
EIN 223698817 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2019 · Primary form: IRS Form 990-PF
- The Lutz Fund
EIN 061157226 · Headquarters: MYSTIC, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2018 · Primary form: IRS Form 990-PF
- The Lyme Fire Company Incorporated
EIN 066063752 · Headquarters: Lyme, CT, USA · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2024 · Primary form: IRS Form 990
- The Lynn and Robert Zimmer Family Foundation (for Joan Dalsheim Nevin)
EIN 137222579 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Lynn and Robert Zimmer Family Foundation (for John Dalsheim)
EIN 206066441 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The M Foundation Inc
EIN 223732277 · Headquarters: Greenwich, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2015 · Primary form: IRS Form 990-PF
- The Macauley Foundation Inc
EIN 061439255 · Headquarters: WATERTOWN, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Macinnis Family Foundation
EIN 203825167 · Headquarters: WESTPORT, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Madison Beach Club Inc
EIN 060436500 · Headquarters: MADISON, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- The Madison Foundation
EIN 061450717 · Headquarters: MADISON, CT, USA · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990
- The Mae Casali Bonvicini Charitable Foundation
EIN 026124449 · Headquarters: LITCHFIELD, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- The Magaro Foundation Inc Al P Trebing Esq
EIN 461558048 · Headquarters: DANBURY, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- The Magnaverde Foundation Inc
EIN 061442891 · Headquarters: GREENWICH, CT, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-PF