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. Marion Gislason Obernauer Memorial Fund

    EIN 066422269 · Headquarters: Stamford, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  2. Maris S Cuneo Foundation

    EIN 205770752 · Headquarters: Wilton, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  3. Maritime Education Network

    EIN 061561439 · Headquarters: Old Saybrook, CT, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  4. Maritime Music and Tradition Society Corp

    EIN 872573429 · Headquarters: Essex, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  5. Marjorie J Baldwin Estate Tr Aka Mary Jewell Baldwin Fund

    EIN 066216205 · Headquarters: Tolland, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  6. Mark Hallquist Memorial Scholarship Fund Inc

    EIN 474611152 · Headquarters: East Hartford, CT, US · Human Services · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  7. Mark Lane Housing Corporation

    EIN 061356231 · Headquarters: WATERBURY, CT, USA · Housing & Shelter · Latest available filing year: 2024 · Primary form: IRS Form 990

  8. Mark R Fusco Foundation

    EIN 222566615 · Headquarters: NEW HAVEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  9. Mark Twain Hostel Inc

    EIN 043407033 · Headquarters: Hartford, CT, US · Housing & Shelter · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  10. Mark Twain Library Association Inc

    EIN 060776655 · Headquarters: REDDING, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  11. Market New Haven Inc

    EIN 061578847 · Headquarters: New Haven, CT, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990

  12. Marketing Executives Networking Group Incorporated

    EIN 223778675 · Headquarters: Old Saybrook, CT, USA · Community Improvement & Capacity Building · Latest available filing year: 2016 · Primary form: IRS Form 990-EZ

  13. Marks Family Foundation

    EIN 061570465 · Headquarters: West Hartford, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  14. Marks Family Foundation

    EIN 061601029 · Headquarters: STONINGTON, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  15. Marlborough Arts Center & Museum Inc

    EIN 061492765 · Headquarters: Marlborough, CT, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  16. Marlborough Association for Senior Housing Inc

    EIN 061039607 · Headquarters: MARLBOROUGH, CT, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  17. Marlborough Business & Professional Association

    EIN 061289258 · Headquarters: Marlborough, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  18. Marlborough Cooperative Nursery School Inc

    EIN 066007936 · Headquarters: Marlborough, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  19. Marlborough Education Foundation Inc

    EIN 272786062 · Headquarters: Marlborough, CT, US · Education · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  20. Marlborough Elementary Child Care Association Inc

    EIN 222546979 · Headquarters: Marlborough, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  21. Marlborough Food Bank Inc

    EIN 841797053 · Headquarters: Marlborough, CT, US · Food, Agriculture & Nutrition · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  22. Marlborough Historical Society

    EIN 852569421 · Headquarters: Marlborough, CT, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  23. Marlborough Junior Ancient Fife & Drum Corp Inc

    EIN 061384528 · Headquarters: Marlborough, CT, US · Arts, Culture & Humanities · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  24. Marlborough Lodge No 1631 Loyal Order of Moose Inc

    EIN 066075578 · Headquarters: MARLBOROUGH, CT, USA · Mutual & Membership Benefit · Latest available filing year: 2013 · Primary form: IRS Form 990-EZ

  25. Marlborough Parent-Teacher Organization Incorporated

    EIN 222835313 · Headquarters: Marlborough, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  26. Marlborough Soccer Club

    EIN 061393350 · Headquarters: MARLBOROUGH, CT, USA · Recreation & Sports · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ

  27. Marlborough Volunteer Fire Company

    EIN 060946331 · Headquarters: Marlborough, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  28. Marlborough Youth Athletic League

    EIN 237129556 · Headquarters: Marlborough, CT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  29. Marlene Correa Foundation Inc

    EIN 392566960 · Headquarters: BRIDGEPORT, CT, USA · Education · Latest available filing year: 2025 · Primary form: IRS Form 990

  30. Marlin Employees Association Inc

    EIN 061609039 · Headquarters: North Haven, CT, US · Recreation & Sports · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  31. Marquis of Granby Ancient Fyfe and Drum Corps Inc

    EIN 237443075 · Headquarters: GRANBY, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  32. Marquise L Baskin Touchable Foundation Inc

    EIN 832161615 · Headquarters: Hamden, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  33. Marrakech Day Services Inc

    EIN 061319875 · Headquarters: WOODBRIDGE, CT, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  34. Marrakech Employees Wishing Well Fund Inc

    EIN 061396123 · Headquarters: Woodbridge, CT, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  35. Marrakech Housing Options Inc

    EIN 061319874 · Headquarters: WOODBRIDGE, CT, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  36. Marrakech Inc

    EIN 237148533 · Headquarters: WOODBRIDGE, CT, USA · Employment · Latest available filing year: 2024 · Primary form: IRS Form 990

  37. Marrakech Residential Services Inc

    EIN 061319876 · Headquarters: WOODBRIDGE, CT, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  38. Marsha Lilien Gladstein Foundation

    EIN 061581875 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  39. Marshapaug Beach Club of Goshen Inc

    EIN 061573976 · Headquarters: Goshen, CT, US · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  40. Martha & Kenneth Revoir Scholarship

    EIN 821038783 · Headquarters: NEW BRITAIN, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  41. Martha Moxley Foundation John Moxley Trustee

    EIN 133207033 · Headquarters: WESTON, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  42. Martha Washington Straus-harry H Straus Foundation Inc

    EIN 560645526 · Headquarters: STAMFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  43. Marthas Voice Inc

    EIN 471903569 · Headquarters: SOUTHBURY, CT, US · Animal Related · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  44. Martin Family Foundation Inc

    EIN 934782284 · Headquarters: WESTPORT, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  45. Martin House Inc

    EIN 061064857 · Headquarters: Norwich, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  46. Martin Kellogg Middle School Parent Advisory Council

    EIN 453768062 · Headquarters: Newington, CT, US · Animal Related · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  47. Martin Luther King and Albert Owens Scholarship Fund Committee Inc

    EIN 061321531 · Headquarters: MERIDEN, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  48. Martin Luther King Jr Scholarship Committee of Grtr Middletown Inc

    EIN 061351538 · Headquarters: Middletown, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  49. Martin Luther King Junior Soccer League Inc

    EIN 300562317 · Headquarters: GRANBY, CT, USA · Youth Development · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  50. Martin Luther King Scholarship Fund of Norwalk Inc

    EIN 223241610 · Headquarters: Norwalk, CT, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  51. Maruf Ct

    EIN 394273211 · Headquarters: Westport, CT, US · Civil Rights, Social Action & Advocacy · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  52. Marvelwood School Inc

    EIN 060726595 · Headquarters: KENT, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  53. Mary and Eliza Freeman Center for History and Community

    EIN 271427856 · Headquarters: BRIDGEPORT, CT, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  54. Mary B Rubinow & William Rubinow Scholarship Fund

    EIN 066034723 · Headquarters: HARTFORD, CT, USA · Education · Latest available filing year: 2018 · Primary form: IRS Form 990-PF

  55. Mary Buel Memorial Inc

    EIN 061265383 · Headquarters: LITCHFIELD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  56. Mary E Branigan Trust

    EIN 066036344 · Headquarters: NORWICH, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  57. Mary E Griswold School Parents Club

    EIN 263768512 · Headquarters: KENSINGTON, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  58. Mary Ellen Hames-dellacato Scholarship Foundation

    EIN 593791968 · Headquarters: Monroe, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  59. Mary Fund Inc

    EIN 061004778 · Headquarters: NORWALK, CT, USA · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  60. Mary Hanney School Alumni Association U S a Inc

    EIN 813735999 · Headquarters: Norwalk, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  61. Mary Hawley Society Inc Newtown Ct

    EIN 261688476 · Headquarters: Newtown, CT, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  62. Mary Jane Lane Road Association Inc

    EIN 061376815 · Headquarters: Westport, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  63. Mary Jane Miller Scholarship Fund Inc

    EIN 462655627 · Headquarters: killingworth, CT, US · Education · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  64. Mary Jobe Ackley Trust & Peace Sanctuary

    EIN 066089224 · Headquarters: MYSTIC, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  65. Mary L Tracy School Parent Teacher Organization Inc

    EIN 392735375 · Headquarters: Orange, CT, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  66. Mary Lloyd Ferrucci & Charles Ferrucci Jr Family Foundation

    EIN 922277593 · Headquarters: Farmington, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  67. Mary Lou Marion Scholarship Fund

    EIN 844699719 · Headquarters: Meriden, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  68. Mary Lou Pursell Nursing Scholarship Fund Inc

    EIN 800608016 · Headquarters: New Haven, CT, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  69. Mary Morrisson Parent-teacher Organization

    EIN 061300294 · Headquarters: Groton, CT, US · Education · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  70. Mary R Fisher Elementary School Pto

    EIN 260112655 · Headquarters: North Grosvenordale, CT, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  71. Mary Taylor Memorial United Methodist Church Foundation Inc

    EIN 061054561 · Headquarters: MILFORD, CT, USA · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990

  72. Mary V Ricci Trust

    EIN 066108041 · Headquarters: WATERBURY, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  73. Mary Wade Residence Inc

    EIN 821367321 · Headquarters: NEW HAVEN, CT, USA · Human Services · Latest available filing year: 2023 · Primary form: IRS Form 990

  74. Mary's Place Inc

    EIN 061462376 · Headquarters: WINDSOR, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  75. Marycare Inc

    EIN 061459484 · Headquarters: TORRINGTON, CT, USA · International, Foreign Affairs & National Security · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  76. Maryheart Crusaders Inc

    EIN 066079145 · Headquarters: MERIDEN, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  77. Marys Field Ltd

    EIN 061073211 · Headquarters: Hebron, CT, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  78. Masah Churchtechs Inc

    EIN 842343131 · Headquarters: Stratford, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  79. Masconn Inc

    EIN 472286068 · Headquarters: Norwalk, CT, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  80. Mashapaug Lake Association Inc

    EIN 061308037 · Headquarters: Union, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  81. Masindas Button Shop Museum Corp

    EIN 844567154 · Headquarters: Willington, CT, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  82. Masjid Bilal Hartford Islamic Center

    EIN 943458819 · Headquarters: EAST HARTFORD, CT, US · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  83. Masjid Esa Ibn Maryam Inc

    EIN 061607658 · Headquarters: Stratford, CT, USA · Religion Related · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  84. Mason Contractors Association of Connecticut Inc

    EIN 060940503 · Headquarters: GRANBY, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  85. Mason T Stasiak Foundation Inc

    EIN 850966367 · Headquarters: Hamden, CT, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  86. Masonic Building Association of Enfield

    EIN 066050529 · Headquarters: Suffield, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  87. Masonic Building Association of Stamford Inc

    EIN 066076265 · Headquarters: Stamford, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  88. Masonic Building Corporation of Woodstock Ct

    EIN 593792534 · Headquarters: Woodstock, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  89. Masonic Charity & Educational Assn Inc

    EIN 060676335 · Headquarters: Willimantic, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  90. Masonic Charity Foundation of CT

    EIN 061435920 · Headquarters: Wallingford, CT, USA · Health Care · Latest available filing year: 2023 · Primary form: IRS Form 990

  91. Masonic Club of Darien Inc A/k/a Masonic Club of the Town of Darien

    EIN 060725962 · Headquarters: DARIEN, CT, USA · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990

  92. Masonic Hall Association of West

    EIN 060772505 · Headquarters: WEST HARTFORD, CT, USA · Mutual & Membership Benefit · Latest available filing year: 2012 · Primary form: IRS Form 990-EZ

  93. Masonic Temple Assoc of Danbury CT

    EIN 060443431 · Headquarters: Danbury, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  94. Masonic Temple Association

    EIN 066071609 · Headquarters: RIDGEFIELD, CT, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  95. Masonic Temple Association of East Hampton Connecticut Inc

    EIN 066050659 · Headquarters: East Hampton, CT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  96. Masonic Temple Association of Fayette Lodge 69 Inc

    EIN 060787365 · Headquarters: Ellington, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  97. Masonic Temple Association of New Haven Connecticut Inc

    EIN 060443433 · Headquarters: NEW HAVEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  98. Masonic Temple Association of Stratford Inc

    EIN 066057887 · Headquarters: STRATFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  99. Masonic Temple Corp

    EIN 060443441 · Headquarters: Preston, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  100. Masonic Temple Corp of Manchester

    EIN 060757418 · Headquarters: TOLLAND, CT, USA · Community Improvement & Capacity Building · Latest available filing year: 2023 · Primary form: IRS Form 990

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