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. Masonic Temple Corporation of New Britain

    EIN 061497728 · Headquarters: NEW BRITAIN, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  2. Masonic Temple Corporation of Stonington

    EIN 066088890 · Headquarters: Mystic, CT, US · Mutual & Membership Benefit · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  3. Masonic Veteran Assn of Connecticut

    EIN 237135773 · Headquarters: Cheshire, CT, US · Public & Societal Benefit · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  4. Masonicare

    EIN 061101924 · Headquarters: Wallingford, CT, USA · Health Care · Latest available filing year: 2023 · Primary form: IRS Form 990

  5. Masonicare at Ashlar Village Inc

    EIN 061050830 · Headquarters: Wallingford, CT, USA · Human Services · Latest available filing year: 2023 · Primary form: IRS Form 990

  6. Masonicare at Chester Village Inc

    EIN 822936624 · Headquarters: Wallingford, CT, USA · Housing & Shelter · Latest available filing year: 2023 · Primary form: IRS Form 990

  7. Masonicare at Home Inc

    EIN 202377783 · Headquarters: Wallingford, CT, USA · Human Services · Latest available filing year: 2023 · Primary form: IRS Form 990

  8. Masonicare at Mystic Inc

    EIN 464656008 · Headquarters: Wallingford, CT, USA · Human Services · Latest available filing year: 2023 · Primary form: IRS Form 990

  9. Masonicare at Newtown Inc

    EIN 061070285 · Headquarters: Wallingford, CT, USA · Health Care · Latest available filing year: 2018 · Primary form: IRS Form 990

  10. Masonicare Corporation

    EIN 061435919 · Headquarters: Wallingford, CT, USA · Health Care · Latest available filing year: 2023 · Primary form: IRS Form 990

  11. Masonicare Health Center

    EIN 060655131 · Headquarters: Wallingford, CT, USA · Human Services · Latest available filing year: 2023 · Primary form: IRS Form 990

  12. Masonicare Partners Home Health and Hospice Inc

    EIN 260758992 · Headquarters: Wallingford, CT, USA · Health Care · Latest available filing year: 2018 · Primary form: IRS Form 990

  13. Masonichip International Inc

    EIN 202523811 · Headquarters: Newington, CT, US · Mutual & Membership Benefit · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  14. Masons Island Yacht Club Inc

    EIN 060714276 · Headquarters: MYSTIC, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  15. Mass Glass Dealers Association C/o Tcors

    EIN 042577680 · Headquarters: GLASTONBURY, CT, USA · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ

  16. Mass Production Inc

    EIN 061494588 · Headquarters: Moosup, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  17. Massachusetts Independent Physician Practice Association Inc

    EIN 993397711 · Headquarters: STAMFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  18. Massaro Community Farm Inc

    EIN 264310293 · Headquarters: WOODBRIDGE, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  19. Massive Family Foundation

    EIN 332359044 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  20. Mast Cell Hope Inc

    EIN 834544114 · Headquarters: Southington, CT, US · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  21. Master Builders Association of Norwalk Connecticut Incorporated

    EIN 060997713 · Headquarters: Norwalk, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  22. Master National Amateur Retriever Club Inc

    EIN 475586408 · Headquarters: Colchester, CT, USA · Animal Related · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  23. Master Piano Technicians of America

    EIN 800394520 · Headquarters: South Windham, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  24. Master Shift

    EIN 471044452 · Headquarters: Bristol, CT, US · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  25. Master's Manna Inc

    EIN 205643387 · Headquarters: Wallingford, CT, USA · Food, Agriculture & Nutrition · Latest available filing year: 2024 · Primary form: IRS Form 990

  26. Mastering Wellness Inc

    EIN 462913789 · Headquarters: Bloomfield, CT, US · Health Care · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  27. Masters Table Community Meals Inc

    EIN 900742371 · Headquarters: Ansonia, CT, US · Food, Agriculture & Nutrition · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  28. Masterwork Productions Inc

    EIN 010767533 · Headquarters: W Granby, CT, US · Arts, Culture & Humanities · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  29. Masuk All Sports Booster Club

    EIN 900540667 · Headquarters: MONROE, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  30. Masuk Athletic Hall of Fame Inc

    EIN 931955891 · Headquarters: Monroe, CT, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  31. Masuk Football Club

    EIN 824979654 · Headquarters: Monroe, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  32. Masuk High School Robotics Team Inc

    EIN 462766419 · Headquarters: Monroe, CT, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  33. Masuk Ice Hockey Parents Club

    EIN 300561157 · Headquarters: Monroe, CT, US · Recreation & Sports · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  34. Masuk Parent-teacher Club Inc

    EIN 262036670 · Headquarters: Monroe, CT, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  35. Match Coalition Inc

    EIN 010671449 · Headquarters: Hartford, CT, US · Recreation & Sports · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  36. MATCH | Manufacturing and Community Technical Hub

    EIN 881523513 · Headquarters: New Haven, CT, US · Employment · Latest available filing year: 2024 · Primary form: IRS Form 990

  37. Math and Ai 4 Girls Inc

    EIN 853747363 · Headquarters: GREENWICH, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  38. Math as a Second Language Inc

    EIN 452955250 · Headquarters: New Haven, CT, USA · Education · Latest available filing year: 2018 · Primary form: IRS Form 990-EZ

  39. Mather Cemetery Association Inc

    EIN 066070029 · Headquarters: Norwalk, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  40. Mather Homestead Foundation

    EIN 475555968 · Headquarters: DARIEN, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  41. Matis Family Foundation Inc

    EIN 475509021 · Headquarters: SOUTHPORT, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  42. Mats Foundation Inc

    EIN 922396166 · Headquarters: OLD SAYBROOK, CT, US · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  43. Matson Foundation Inc

    EIN 454816346 · Headquarters: STRATFORD, CT, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  44. Matt Alsfeld Memorial Fund

    EIN 832794712 · Headquarters: East Killingly, CT, USA · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  45. Matt Hammer Ministries Inc

    EIN 921632448 · Headquarters: Newtown, CT, US · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  46. Mattabassett Rifle & Pistol Club Inc

    EIN 332278117 · Headquarters: BERLIN, CT, USA · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990

  47. Mattabeseck Audubon Society Inc

    EIN 237400565 · Headquarters: Middletown, CT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  48. Mattabesset River Watershed Association

    EIN 061483655 · Headquarters: Kensington, CT, US · Environment · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  49. Mattatuck Astronomical Society C/o Math Science Div

    EIN 061156139 · Headquarters: BETHLEHEM, CT, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  50. Mattatuck Drum Band Inc

    EIN 066062447 · Headquarters: Waterbury, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  51. Mattatuck Historical Society

    EIN 060443990 · Headquarters: WATERBURY, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  52. Mattatuck Senior Center Inc

    EIN 061233672 · Headquarters: Waterbury, CT, USA · Human Services · Latest available filing year: 2013 · Primary form: IRS Form 990-EZ

  53. Matteo Family Foundation

    EIN 061603385 · Headquarters: PLAINVILLE, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  54. Matthew 25 Project Inc

    EIN 455551743 · Headquarters: Sherman, CT, US · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  55. Matthew Kull Foundation for Healing Lymphoma

    EIN 134121200 · Headquarters: NEW MILFORD, CT, US · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  56. Matthew Miles Shaw Scholarship Foundation Inc

    EIN 510493490 · Headquarters: Wilton, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  57. Matthew Molloy Memorial Foundation

    EIN 994159270 · Headquarters: Rocky Hill, CT, US · Public & Societal Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  58. Matthew Scott Crane Foundation Inc

    EIN 474417162 · Headquarters: Wethersfield, CT, US · Animal Related · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  59. Matthew28 Ministries

    EIN 820819969 · Headquarters: EAST HARTFORD, CT, US · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  60. Matthews Hearts of Hope Inc

    EIN 453984506 · Headquarters: SHERMAN, CT, USA · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  61. Mattis Family Foundation

    EIN 203538795 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  62. Matts Mission - End the Stigma of Drug Addiction Inc

    EIN 825236810 · Headquarters: Jewett City, CT, US · Mental Health & Crisis Intervention · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  63. Matts Mission Fund Inc

    EIN 273506210 · Headquarters: North Branford, CT, US · Education · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  64. Matulaitis Nursing Home Inc

    EIN 060983700 · Headquarters: PUTNAM, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  65. Maud Glover Folsom Foundation Inc

    EIN 111965890 · Headquarters: SIMSBURY, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  66. Maury and Sonia Cohn Foundation Inc

    EIN 066050830 · Headquarters: NORWICH, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  67. Mawji Foundation

    EIN 991575051 · Headquarters: Stamford, CT, USA · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  68. Mawuena Ministries

    EIN 823915853 · Headquarters: Bloomfield, CT, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  69. Max & Helen Abrams Foundation Inc

    EIN 136090811 · Headquarters: STAMFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  70. Max and Bertha Dressler Foundation

    EIN 366108636 · Headquarters: ROXBURY, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  71. Max and Rachel Javit Family Foundation C/o Monique R Polidoro Trustee

    EIN 066479632 · Headquarters: HARTFORD, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  72. Max B Stevens Memorial Fund Incorporated

    EIN 237068817 · Headquarters: Hartford, CT, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  73. Max Cares Foundation

    EIN 474568220 · Headquarters: HARTFORD, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990

  74. Max Michael Rosenfield Foundation Inc

    EIN 461393203 · Headquarters: Ridgefield, CT, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  75. Max Sinoway Babe Ruth League

    EIN 472258386 · Headquarters: North Haven, CT, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  76. Maxcen Housing Society Inc Connecticut Branch

    EIN 822926212 · Headquarters: East Lime, CT, USA · Housing & Shelter · Latest available filing year: 2025 · Primary form: IRS Form 990

  77. Maxine & Martin Epstein Family Fnd

    EIN 222815417 · Headquarters: NEW HAVEN, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2021 · Primary form: IRS Form 990-PF

  78. Maxs Furry Family Rescue

    EIN 460992439 · Headquarters: Stamford, CT, US · Animal Related · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  79. Maxwell Sheperd Memorial Arts Fund Inc

    EIN 562420171 · Headquarters: COLLINSVILLE, CT, US · Arts, Culture & Humanities · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  80. Mayan Esteem Project

    EIN 742905152 · Headquarters: Farmington, CT, US · Arts, Culture & Humanities · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  81. Mayapple Center for the Arts and Humanities Inc

    EIN 464248155 · Headquarters: STAMFORD, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ

  82. Mayberry Village Nrz Inc

    EIN 311694541 · Headquarters: East Hartford, CT, US · Housing & Shelter · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  83. Mayflower Montessori School Inc

    EIN 270652155 · Headquarters: NORWICH, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  84. Mayflower Pembroke Welsh Corgi Club

    EIN 061182896 · Headquarters: LEBANON, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  85. Maynard Road Corporation

    EIN 205952774 · Headquarters: MERIDEN, CT, USA · Housing & Shelter · Latest available filing year: 2023 · Primary form: IRS Form 990

  86. Mayor Perez's Rising Stars For

    EIN 061417703 · Headquarters: HARTFORD, CT, USA · Human Services · Latest available filing year: 2010 · Primary form: IRS Form 990-EZ

  87. Mayors Charity Ball Corporation

    EIN 262769749 · Headquarters: West Hartford, CT, USA · Community Improvement & Capacity Building · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ

  88. Mayors Charity Golf Tournament

    EIN 464679772 · Headquarters: STRATFORD, CT, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  89. Mazolu Animal Sanctuary

    EIN 861638816 · Headquarters: South Windsor, CT, US · Animal Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  90. Mazzini Multi-services & Immigration Legal Aid Inc

    EIN 933767545 · Headquarters: Windsor Locks, CT, USA · Crime & Legal Related · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  91. Mbi Voluntary Employees Beneficiary Association

    EIN 061387008 · Headquarters: Norwalk, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  92. Mbwwiih Inc

    EIN 593824604 · Headquarters: STAMFORD, CT, US · Arts, Culture & Humanities · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  93. Mc 2 Technology Inc

    EIN 841720106 · Headquarters: West Hartford, CT, USA · Youth Development · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  94. Mccall Foundation Inc

    EIN 060961756 · Headquarters: TORRINGTON, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  95. Mccf Inc

    EIN 462611724 · Headquarters: Fairfield, CT, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  96. Mcchord Foundation

    EIN 364969620 · Headquarters: NORWALK, CT, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  97. Mccloskey Family Foundation Inc C/o Hugh P Mccloskey

    EIN 010736063 · Headquarters: NEW MILFORD, CT, USA · Health Care · Latest available filing year: 2025 · Primary form: IRS Form 990

  98. Mcclure Foundation

    EIN 473645694 · Headquarters: canterbury, CT, US · Religion Related · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  99. Mccourt Memorial Garden in Memory of Sept 11Th Victims of Se Ct Inc

    EIN 611441335 · Headquarters: Mystic, CT, US · Environment · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  100. Mccoy Foundation

    EIN 871086877 · Headquarters: Suffield, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

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