Nonprofits in Massachusetts

Nonprofits in Massachusetts. Browse 52,168 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. Massachusetts Independent Film Festival Inc

    EIN 383983289 · Headquarters: Uxbridge, MA, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  2. Massachusetts Independent Football Officials Association Inc

    EIN 872271430 · Headquarters: Medfield, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  3. Massachusetts Indian Association

    EIN 046056887 · Headquarters: CARLISLE, MA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  4. Massachusetts Indoor Tennis Association

    EIN 992172804 · Headquarters: Cohasset, MA, US · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  5. Massachusetts Infectious Diseases Society

    EIN 043474322 · Headquarters: Boston, MA, USA · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  6. Massachusetts Innovation & Technology Exchange Inc

    EIN 043295018 · Headquarters: BOSTON, MA, USA · Arts, Culture & Humanities · Latest available filing year: 2020 · Primary form: IRS Form 990

  7. Massachusetts Innovation Networkinc

    EIN 844289039 · Headquarters: BOXBOUROUGH, MA, USA · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990

  8. Massachusetts Institute for Justice Inc

    EIN 611433872 · Headquarters: Newburyport, MA, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  9. Massachusetts Institute for Psychoanalysis (Mip) Inc

    EIN 043022439 · Headquarters: BROOKLINE, MA, USA · Social Science · Latest available filing year: 2024 · Primary form: IRS Form 990

  10. Massachusetts Institute of Alternative Medicine Inc

    EIN 043308814 · Headquarters: Wilbraham, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  11. Massachusetts Institute of Technology

    EIN 042103594 · Headquarters: Cambridge, MA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  12. Massachusetts Institute of Technology Welfare Benefit Plans Trust

    EIN 043177556 · Headquarters: Cambridge, MA, USA · Mutual & Membership Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990

  13. Massachusetts Instrumental and Choral Conductors Association

    EIN 921654316 · Headquarters: Lexington, MA, USA · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  14. Massachusetts Insurance Federation Inc

    EIN 450507615 · Headquarters: Boston, MA, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990

  15. Massachusetts Insurers Insolvency Fund

    EIN 237304306 · Headquarters: Boston, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  16. Massachusetts Integrative Resources

    EIN 933753123 · Headquarters: MALDEN, MA, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  17. Massachusetts Interfaith Committee for Worker Justice

    EIN 043413441 · Headquarters: Boston, MA, US · Religion Related · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  18. Massachusetts Interfaith Power and Light

    EIN 320022524 · Headquarters: BOSTON, MA, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  19. Massachusetts Interior Design Coalition Inc

    EIN 043234707 · Headquarters: SOUTH WEYMOUTH, MA, US · Community Improvement & Capacity Building · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  20. Massachusetts International Festival of the Arts Inc

    EIN 043192668 · Headquarters: Holyoke, MA, USA · Arts, Culture & Humanities · Latest available filing year: 2023 · Primary form: IRS Form 990

  21. Massachusetts International Trade Council Inc

    EIN 042688640 · Headquarters: BOSTON, MA, USA · International, Foreign Affairs & National Security · Latest available filing year: 2009 · Primary form: IRS Form 990

  22. Massachusetts Interscholastic Athletic Association Inc

    EIN 042642190 · Headquarters: FRANKLIN, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  23. Massachusetts Interscholastic Wrestling Officials Association

    EIN 834276215 · Headquarters: CHELMSFORD, MA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  24. Massachusetts Iota Tau Association

    EIN 043506094 · Headquarters: ACTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  25. Massachusetts Israeli Women Organization Inc

    EIN 821313221 · Headquarters: NATICK, MA, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  26. Massachusetts Jewish Scholarship Granting Organization Inc

    EIN 392551290 · Headquarters: NEWTON CENTER, MA, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  27. Massachusetts Jobs with Justice Action Fund Inc

    EIN 813561658 · Headquarters: JAMAICA PLAIN, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  28. Massachusetts Jr Classical League

    EIN 043583412 · Headquarters: ROXBURY, MA, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  29. Massachusetts Judges Conference of the Trial Court of the Commonwealth Inc

    EIN 222485939 · Headquarters: SALEM, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  30. Massachusetts Junior Academy of Science

    EIN 461612743 · Headquarters: CAMBRIDGE, MA, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  31. Massachusetts Justices of the Peace Association Inc

    EIN 042880372 · Headquarters: CANTON, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  32. Massachusetts Juvenile Bar Association Inc

    EIN 471020260 · Headquarters: New Bedford, MA, USA · Crime & Legal Related · Latest available filing year: 2018 · Primary form: IRS Form 990-EZ

  33. Massachusetts Juvenile Police Officer's Association Inc

    EIN 042656267 · Headquarters: Westborough, MA, USA · Crime & Legal Related · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  34. Massachusetts Laborers' Health & Welfare Fund

    EIN 042214296 · Headquarters: BURLINGTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  35. Massachusetts Laborers' Legal Services Fund

    EIN 046357603 · Headquarters: BURLINGTON, MA, USA · Mutual & Membership Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990

  36. Massachusetts Lactation Consultant Association

    EIN 814173761 · Headquarters: Swampscott, MA, US · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  37. Massachusetts Land Conservation Trust

    EIN 223209651 · Headquarters: BOSTON, MA, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  38. Massachusetts Land Trust Coalition

    EIN 272331022 · Headquarters: Sudbury, MA, United States · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  39. Massachusetts Latin Golf FOUNDATION INC

    EIN 332141554 · Headquarters: WRENTHAM, MA, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  40. Massachusetts Latino Police Officers Association

    EIN 460721724 · Headquarters: SOUTH EASTON, MA, USA · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  41. Massachusetts Laundryowners Association

    EIN 046058350 · Headquarters: Malden, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  42. Massachusetts Law Enforcement Support Inc

    EIN 462801261 · Headquarters: Westport, MA, US · Human Services · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  43. Massachusetts Law Reform Institute Inc

    EIN 046004303 · Headquarters: BOSTON, MA, USA · Crime & Legal Related · Latest available filing year: 2024 · Primary form: IRS Form 990

  44. Massachusetts League of Community Health Centers Inc

    EIN 042507409 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  45. Massachusetts Leather Insurance Fund

    EIN 046062372 · Headquarters: Peabody, MA, US · Mutual & Membership Benefit · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  46. Massachusetts Legal Assistance Corporation

    EIN 042790762 · Headquarters: BOSTON, MA, USA · Crime & Legal Related · Latest available filing year: 2024 · Primary form: IRS Form 990

  47. Massachusetts Lgbt Business Network Inc

    EIN 850612647 · Headquarters: Boston, MA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  48. Massachusetts Lgbt Chamber of Commerce

    EIN 823342211 · Headquarters: Boston, MA, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990

  49. Massachusetts Library Aid Association

    EIN 046038185 · Headquarters: ASHBURNHAM, MA, USA · Education · Latest available filing year: 2015 · Primary form: IRS Form 990-PF

  50. Massachusetts Library Association

    EIN 046056508 · Headquarters: WESTBOROUGH, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  51. Massachusetts Library System Inc

    EIN 043387698 · Headquarters: MARLBOROUGH, MA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  52. Massachusetts Library Trustees Association

    EIN 046116281 · Headquarters: SHIRLEY, MA, USA · Education · Latest available filing year: 2021 · Primary form: IRS Form 990-EZ

  53. Massachusetts Life & Health Insurance Guaranty Association

    EIN 222994116 · Headquarters: SPRINGFIELD, MA, USA · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990

  54. Massachusetts Life Care Residents' Assoc

    EIN 453610895 · Headquarters: Auburndale, MA, USA · Housing & Shelter · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  55. Massachusetts Lions District 33-S H Earing Foundation Inc

    EIN 900426784 · Headquarters: Fall River, MA, US · Mental Health & Crisis Intervention · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  56. Massachusetts Lions District 33N Visual AIDS Foundation

    EIN 043165497 · Headquarters: WOBURN, MA, USA · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  57. Massachusetts Lions District 33Y Eyemobile Inc

    EIN 061693684 · Headquarters: GREENFIELD, MA, USA · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  58. Massachusetts Lions Eye Research Fund Inc

    EIN 042278062 · Headquarters: BELMONT, MA, USA · Medical Research · Latest available filing year: 2024 · Primary form: IRS Form 990

  59. Massachusetts Literacy Foundation Inc

    EIN 043680020 · Headquarters: Braintree, MA, US · Education · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  60. Massachusetts Literacy Project Corp

    EIN 320042987 · Headquarters: Wellesley Hills, MA, US · Education · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  61. Massachusetts Little League Baseball District Administrators A

    EIN 455334646 · Headquarters: LYNNFIELD, MA, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  62. Massachusetts Lobstermen's Association

    EIN 042587614 · Headquarters: Scituate, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  63. Massachusetts Locksmiths Inc

    EIN 042788145 · Headquarters: NORTH READING, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  64. Massachusetts Lodging Association

    EIN 043142502 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  65. Massachusetts Lodging Association Education Foundation Inc

    EIN 223203151 · Headquarters: BOSTON, MA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990

  66. Massachusetts Long Term Care Mutual Aid

    EIN 010908067 · Headquarters: NEEDHAM, MA, USA · Housing & Shelter · Latest available filing year: 2010 · Primary form: IRS Form 990-EZ

  67. Massachusetts Lung Health Inc

    EIN 042104717 · Headquarters: FRAMINGHAM, MA, USA · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2014 · Primary form: IRS Form 990

  68. Massachusetts Lyme Association

    EIN 471103425 · Headquarters: Jamaica Plain, MA, US · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  69. Massachusetts Maniacs

    EIN 562303058 · Headquarters: Waltham, MA, US · Youth Development · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  70. Massachusetts Manufactured Housing Association Inc

    EIN 043323351 · Headquarters: HALIFAX, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  71. Massachusetts Manufacturing Extension Partnership

    EIN 043459696 · Headquarters: AUBURN, MA, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990

  72. Massachusetts Marine Educators New England Aquarium

    EIN 042654320 · Headquarters: New Bedford, MA, US · Education · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  73. Massachusetts Marine Trades Association Inc

    EIN 042461691 · Headquarters: FOXBORO, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  74. Massachusetts Marine Trades Educational Trust

    EIN 300160656 · Headquarters: Hingham, MA, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  75. Massachusetts Maritime Academy Alumni Association Inc

    EIN 237273472 · Headquarters: BUZZARDS BAY, MA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  76. Massachusetts Maritime Academy Foundation Inc

    EIN 237025807 · Headquarters: Buzzards Bay, MA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  77. Massachusetts Maritime Academy Parent Association Incorporated

    EIN 883204174 · Headquarters: Plymouth, MA, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  78. Massachusetts Master Gardener Association Inc

    EIN 800272957 · Headquarters: FRAMINGHAM, MA, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  79. Massachusetts Maternity & Foundling Hospital Corp

    EIN 042628366 · Headquarters: BROOKLINE, MA, USA · Health Care · Latest available filing year: 2021 · Primary form: IRS Form 990-PF

  80. Massachusetts Me-cfs & Fm Association Inc

    EIN 043014644 · Headquarters: Cambridge, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  81. Massachusetts Media Fund Inc

    EIN 834616910 · Headquarters: SOMERVILLE, MA, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  82. Massachusetts Medical Benevolent Society

    EIN 237089741 · Headquarters: WALTHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  83. Massachusetts Medical Device Industry Council Inc

    EIN 043345676 · Headquarters: BROOKLINE, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  84. Massachusetts Medical Society

    EIN 042050773 · Headquarters: WALTHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  85. Massachusetts Medical Society

    EIN 042193016 · Headquarters: WALTHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  86. Massachusetts Medical Society

    EIN 042730284 · Headquarters: WALTHAM, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  87. Massachusetts Medical Society

    EIN 046148974 · Headquarters: Waltham, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  88. Massachusetts Medical Society

    EIN 223369130 · Headquarters: WALTHAM, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  89. Massachusetts Medical Society

    EIN 223369133 · Headquarters: WALTHAM, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  90. Massachusetts Medical Society

    EIN 223369135 · Headquarters: WALTHAM, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  91. Massachusetts Medical Society

    EIN 223369138 · Headquarters: WALTHAM, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  92. Massachusetts Medical Society

    EIN 223369141 · Headquarters: WALTHAM, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  93. Massachusetts Medical Society

    EIN 223369142 · Headquarters: Waltham, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  94. Massachusetts Medical Society

    EIN 223369166 · Headquarters: WALTHAM, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  95. Massachusetts Medical Society

    EIN 223369260 · Headquarters: Wilbrham, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  96. Massachusetts Medical Society

    EIN 237206114 · Headquarters: WALTHAM, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  97. Massachusetts Medical Society

    EIN 510193209 · Headquarters: WALTHAM, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  98. Massachusetts Medical Society Alliance Inc

    EIN 237055291 · Headquarters: WALTHAM, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  99. Massachusetts Medical Society and Alliance Charitable Foundation

    EIN 223199624 · Headquarters: WALTHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  100. Massachusetts Medical Society Charitable & Educational Fund

    EIN 046075905 · Headquarters: WALTHAM, MA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

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