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

  1. The Human Resource Association of Central Connecticut

    EIN 061293531 · Headquarters: BERLIN, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  2. The Human Schools Project Incorporated

    EIN 990478077 · Headquarters: New Haven, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  3. The Hummingbird Project Company

    EIN 923953272 · Headquarters: WINDSOR, CT, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  4. The Hundred Club of Connecticutinc

    EIN 066091078 · Headquarters: GLASTONBURY, CT, USA · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2024 · Primary form: IRS Form 990

  5. The Hundred Year Association of Ny Inc

    EIN 136093215 · Headquarters: MONROE, CT, USA · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  6. The Hungry People Corporation

    EIN 412684805 · Headquarters: Hartford, CT, US · Food, Agriculture & Nutrition · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  7. The Hunter Grubb Foundation Inc

    EIN 596202749 · Headquarters: OLD LYME, CT, USA · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-PF

  8. The Hygeia Foundation for Health Science and the Environment Inc

    EIN 132893033 · Headquarters: NEW CANAAN, CT, USA · International, Foreign Affairs & National Security · Latest available filing year: 2024 · Primary form: IRS Form 990

  9. The Hynes Foundation Inc C/o Pkf O'connor Davies Advisory Llc

    EIN 472515717 · Headquarters: STAMFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  10. The Ibex Peak Foundation Inc

    EIN 820671497 · Headquarters: RIVERSIDE, CT, USA · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  11. The Ila Foundation

    EIN 311577089 · Headquarters: WILTON, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  12. The Imus Ranch Inc

    EIN 133997308 · Headquarters: Darien, CT, USA · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  13. The Independent Day School Inc

    EIN 066012653 · Headquarters: MIDDLEFIELD, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  14. The Indian Harbor Yacht Club Incorporated

    EIN 060400220 · Headquarters: GREENWICH, CT, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  15. The Inglesea Charitable Trust

    EIN 357011350 · Headquarters: NORWALK, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  16. The Initiative for Public Interest Law at Yale Inc

    EIN 061074329 · Headquarters: New Haven, CT, USA · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-EZ

  17. The Inner-city Foundation for Charity & Education Inc

    EIN 061318337 · Headquarters: BRIDGEPORT, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2022 · Primary form: IRS Form 990

  18. The Innis Arden Golf Club Inc

    EIN 060400660 · Headquarters: OLD GREENWICH, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  19. The Institute for American Indian Studies

    EIN 237124597 · Headquarters: WASHINGTON, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  20. The Institute for Applied Theology and Science

    EIN 510623559 · Headquarters: Branford, CT, US · Education · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  21. The Institute for Regenerative Learning

    EIN 901042753 · Headquarters: Coventry, CT, US · Education · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  22. The Institute Library

    EIN 060646756 · Headquarters: New Haven, CT, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  23. The Institute of Ministry Management & Leadership Inc

    EIN 861029287 · Headquarters: NIANTIC, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  24. The Intercommunity Foundation Inc

    EIN 273739973 · Headquarters: EAST HARTFORD, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990

  25. The International Associatin of Lions Club

    EIN 061474713 · Headquarters: Waterford, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  26. The International Association of Contract and Commercial Managers Inc

    EIN 134060641 · Headquarters: RIDGEFIELD, CT, USA · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990

  27. The International Education Exchange Inc

    EIN 640964247 · Headquarters: OLD GREENWICH, CT, USA · International, Foreign Affairs & National Security · Latest available filing year: 2014 · Primary form: IRS Form 990-EZ

  28. The International Institute for Alcoholism Education & Training Inc

    EIN 061312368 · Headquarters: DARIEN, CT, USA · Mental Health & Crisis Intervention · Latest available filing year: 2014 · Primary form: IRS Form 990

  29. The Interruption Project

    EIN 393651449 · Headquarters: NEW HAVEN, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  30. The Iota Eta Chapter of the Sigma C Hi Fraternity

    EIN 061192025 · Headquarters: Danbury, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  31. The Iris Fund Inc

    EIN 931891413 · Headquarters: Ridgefield, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990

  32. The Irish American Museum of Washington DC Inc

    EIN 134354547 · Headquarters: Greenwich, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2015 · Primary form: IRS Form 990

  33. The Isidore Stern Foundation

    EIN 136113256 · Headquarters: Ridgefield, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  34. The Italian Center Men's Club Inc

    EIN 933355915 · Headquarters: Stamford, CT, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  35. The Italian Center of Stamford Inc

    EIN 060646684 · Headquarters: STAMFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  36. The Ivanhoe Charitable Foundation Inc

    EIN 465562336 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  37. The Ivy Bound Education Foundation Inc

    EIN 394992124 · Headquarters: Farmington, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  38. The Jacks Family Foundation

    EIN 061190036 · Headquarters: WEST SIMSBURY, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2012 · Primary form: IRS Form 990-PF

  39. The James & Mary Ellen Marpe Family Foundation

    EIN 061663665 · Headquarters: STAMFORD, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  40. The James a Greenleaf Memorial Trust Fund Inc

    EIN 300021151 · Headquarters: WATERFORD, CT, USA · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  41. The James and Sophie Zimmerman Family Foundation Inc

    EIN 853670540 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2022 · Primary form: IRS Form 990-PF

  42. The James Mcmanus Fund of the Htfd Dental Society Inc

    EIN 066060434 · Headquarters: WEST HARTFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  43. The James P Verhalen Family Fdn Inc C/o Joyce Pandolfi

    EIN 223694939 · Headquarters: STONINGTON, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  44. The Jane and Daniel Och Family Foundation

    EIN 263791338 · Headquarters: Greenwich, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  45. The Jane Coffin Childs Memorial Fund for Medical Research

    EIN 066034840 · Headquarters: New Haven, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  46. The Jane T Muhlethaler Foundation Inc C/o Brody Wilkinson Pc

    EIN 061481432 · Headquarters: SOUTHPORT, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  47. The Jarnstedt Foundation

    EIN 030429066 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2010 · Primary form: IRS Form 990-PF

  48. The Jasper Home Foundation Inc

    EIN 825246041 · Headquarters: GREENWICH, CT, USA · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-PF

  49. The Jdj Charitable Trust

    EIN 137239304 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  50. The Jean I & Charles H Brunie Foundation

    EIN 133384777 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2011 · Primary form: IRS Form 990-PF

  51. The Jean Whyte Mohr and Frank T Mohr Charitable Trust

    EIN 363649835 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2020 · Primary form: IRS Form 990-PF

  52. The Jennifer Jaff Center Inc

    EIN 830415607 · Headquarters: FARMINGTON, CT, USA · Health Care · Latest available filing year: 2014 · Primary form: IRS Form 990

  53. The Jenny and Jay Galluzzo Family Foundation Inc

    EIN 472579607 · Headquarters: OLD GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2022 · Primary form: IRS Form 990-PF

  54. The Jeremiah J and Virginia W Lowney Family Foundation

    EIN 066483991 · Headquarters: NORWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  55. The Jerrold & Sally Fine Foundation Inc

    EIN 222774146 · Headquarters: DARIEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  56. The Jesse Bayer Foundation C/o Robert Bayer

    EIN 133369906 · Headquarters: GREENWICH, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  57. The Jessica Rekos Foundation Inc

    EIN 463229838 · Headquarters: Sandy Hook, CT, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  58. The Jewett City Little League Inc

    EIN 061452578 · Headquarters: JEWETT CITY, CT, USA · Recreation & Sports · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ

  59. The Jewish Center for Community Services Inc

    EIN 060655499 · Headquarters: WESTPORT, CT, USA · Human Services · Latest available filing year: 2014 · Primary form: IRS Form 990

  60. The Jewish Community Center in Sherman Inc

    EIN 061414287 · Headquarters: SHERMAN, CT, USA · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990

  61. The Jewish Community Foundation Inc

    EIN 060646689 · Headquarters: BRIDGEPORT, CT, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  62. The Jewish Federation of Greater New Haven Inc

    EIN 060647025 · Headquarters: WOODBRIDGE, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  63. The Jewish High School of Connecticut

    EIN 205952939 · Headquarters: STAMFORD, CT, USA · Education · Latest available filing year: 2017 · Primary form: IRS Form 990

  64. The Jewish Historical Society of Fairfield County

    EIN 222573763 · Headquarters: Stamford, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  65. The Jewish Historical Society of Greater Hartford Inc

    EIN 061217339 · Headquarters: WEST HARTFORD, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  66. The Jewish Historical Society of Greater New Haven

    EIN 060941787 · Headquarters: NEW HAVEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  67. The Jim and Cathy Smith Family Foundation

    EIN 836476285 · Headquarters: MIDDLEBURY, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  68. The Jmr Effective Giving Foundation C/o Jason M Rotenberg

    EIN 933986653 · Headquarters: RIDGEFIELD, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  69. The Joe and Kay Calvanese Foundation Inc

    EIN 061454120 · Headquarters: PLANTSVILLE, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990

  70. The Joe Garassino Foundation Inc

    EIN 462601479 · Headquarters: WATERTOWN, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990

  71. The John and Diana Nicholson Foundation C/o John P Nicholson Jr

    EIN 043792876 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  72. The John and Kathe Dyson Foundation Inc C/o Corporation Service Company

    EIN 832348197 · Headquarters: New Canaan, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  73. The John B Pierce Laboratory Inc

    EIN 060646780 · Headquarters: NEW HAVEN, CT, USA · Science & Technology · Latest available filing year: 2024 · Primary form: IRS Form 990

  74. The John D & Barbara G Collins Foundation UA DTD 5221997

    EIN 066447348 · Headquarters: Greenwich, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2018 · Primary form: IRS Form 990-PF

  75. The John D Thompson Institute for Education Training and Research

    EIN 061003712 · Headquarters: BRANFORD, CT, USA · Human Services · Latest available filing year: 2023 · Primary form: IRS Form 990

  76. The John E Donaldson and Dennis J Perkins - Foundation Inc

    EIN 061361296 · Headquarters: WILTON, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2016 · Primary form: IRS Form 990-PF

  77. The John Endicott Lovell Foundation Inc

    EIN 473105733 · Headquarters: Greenwich, CT, USA · Religion Related · Latest available filing year: 2020 · Primary form: IRS Form 990-PF

  78. The John G Martin Foundation

    EIN 066042495 · Headquarters: WEST HARTFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  79. The John Lumpkin Memorial Fund Inc

    EIN 471337712 · Headquarters: PLAINVILLE, CT, US · Human Services · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  80. The John T and Jane a Wiederhold Foundation

    EIN 061830842 · Headquarters: TORRINGTON, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990

  81. The Johnson Home

    EIN 060646697 · Headquarters: NORWICH, CT, USA · Housing & Shelter · Latest available filing year: 2023 · Primary form: IRS Form 990-PF

  82. The Jonah Center for Earth and Art

    EIN 050610255 · Headquarters: PORTLAND, CT, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  83. The Jones Foundation Inc

    EIN 041440413 · Headquarters: GREENWICH, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  84. The Jordan Porco Foundation

    EIN 275039555 · Headquarters: MANCHESTER, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990

  85. The Josef and Anni Albers Foundation Inc

    EIN 237104223 · Headquarters: BETHANY, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  86. The Joseph L Leclair Jr and Yvonne Leclair Scholarship Fund

    EIN 562634912 · Headquarters: Oakville, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  87. The Joseph Manzi Foundation Inc Joseph and Anthony Manzi Foundation

    EIN 208688836 · Headquarters: KENSINGTON, CT, USA · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  88. The Joshua Foundation Inc

    EIN 061553745 · Headquarters: BETHEL, CT, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  89. The Joshua Metell Foundation Inc

    EIN 471673284 · Headquarters: North Windham, CT, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  90. The Joyce & Bernard Zimmerman Foundation

    EIN 061599625 · Headquarters: NORWALK, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  91. The Juan Jacobo De Lara and Jonne Low De Lara Foundation Inc

    EIN 061004121 · Headquarters: WESTPORT, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  92. The Julius Family Foundation

    EIN 206387243 · Headquarters: OLD GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  93. The Justice Education Center Inc

    EIN 060897199 · Headquarters: WEST HARTFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  94. The Kahn Foundation

    EIN 463973421 · Headquarters: WESTPORT, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  95. The Kaman Foundation Inc

    EIN 061386119 · Headquarters: HARTFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  96. The Karen E Kohler Charitable Foundation

    EIN 133922666 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2020 · Primary form: IRS Form 990-PF

  97. The Karen Katen Foundation

    EIN 207103490 · Headquarters: Westport, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  98. The Karlson Family Foundation

    EIN 133762819 · Headquarters: TRUMBULL, CT, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-PF

  99. The Katharine Hepburn Cultural Arts Center Inc

    EIN 510646562 · Headquarters: Old Saybrook, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  100. The Katherine Forest Crafts Foundation Inc

    EIN 222618186 · Headquarters: Mystic, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

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