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 Medical Society Essex South District

    EIN 046290204 · Headquarters: WALTHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  2. Massachusetts Mens Gathering Inc

    EIN 461363543 · Headquarters: WINCHESTER, MA, USA · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  3. Massachusetts Middle School Speech League Inc

    EIN 475184779 · Headquarters: Shrewsbury, MA, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  4. Massachusetts Midwives Alliance Inc

    EIN 223031390 · Headquarters: TURNERS FALLS, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  5. Massachusetts Military Heroes Fund Inc

    EIN 261318242 · Headquarters: CHARLESTOWN, MA, USA · Public & Societal Benefit · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  6. Massachusetts Military Horse Foundation Inc

    EIN 208304791 · Headquarters: Framingham, MA, US · Public & Societal Benefit · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  7. Massachusetts Military Museum Inc

    EIN 260092501 · Headquarters: LUNENBURG, MA, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. Massachusetts Military Support Foundation Inc

    EIN 821605363 · Headquarters: Sandwich, MA, USA · Public & Societal Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990

  9. Massachusetts Militia Gymnastics Team Inc

    EIN 393093834 · Headquarters: Newton Center, MA, US · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  10. Massachusetts Minority Contractors Association Inc

    EIN 463605058 · Headquarters: Dorchester, MA, US · Community Improvement & Capacity Building · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  11. Massachusetts Minority Court Officers Association Inc

    EIN 474519498 · Headquarters: Sharon, MA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  12. Massachusetts Minority State Police Officers Association Inc

    EIN 043257423 · Headquarters: DORCHESTER, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  13. Massachusetts Moderators Associatio N Inc

    EIN 010011694 · Headquarters: HAVERHILL, MA, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  14. Massachusetts Monument Builders Association Inc

    EIN 874485168 · Headquarters: QUINCY, MA, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  15. Massachusetts Mortgage Bankers Association

    EIN 042605504 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  16. Massachusetts Mortgage Bankers Foundation Inc

    EIN 201367183 · Headquarters: PITTSFIELD, MA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  17. Massachusetts Motor Transportation Association

    EIN 041640940 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  18. Massachusetts Movers Association Inc

    EIN 042197135 · Headquarters: ACTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  19. Massachusetts Municipal Human Resources Inc

    EIN 042958688 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  20. Massachusetts Municipal Lawyers Association Inc

    EIN 463086922 · Headquarters: HINGHAM, MA, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  21. Massachusetts Municipal Police Coalition

    EIN 260151872 · Headquarters: SOUTHBOROUGH, MA, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  22. Massachusetts Museum of Contemporary Art Foundation Inc

    EIN 043113688 · Headquarters: NORTH ADAMS, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  23. Massachusetts Music Educators Association Inc

    EIN 510147238 · Headquarters: NEEDHAM, MA, USA · Arts, Culture & Humanities · Latest available filing year: 2021 · Primary form: IRS Form 990

  24. Massachusetts Music Teacher Association Inc

    EIN 222588476 · Headquarters: NATICK, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  25. Massachusetts Mutual Agents Health Benefit Trust

    EIN 222553157 · Headquarters: Springfield, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  26. Massachusetts Mutual Employee Health Benefit Trust

    EIN 226463418 · Headquarters: Springfield, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  27. Massachusetts Mutual Life Insurance Co Retired Lives Reserve

    EIN 042798906 · Headquarters: Springfield, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  28. Massachusetts National Guard Enlisted Association

    EIN 452068318 · Headquarters: Hanscom AFB, MA, USA · Public & Societal Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  29. Massachusetts National Guard Foundation

    EIN 473032463 · Headquarters: Burlington, MA, US · Public & Societal Benefit · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  30. Massachusetts National Lancers Assoc Inc

    EIN 760782899 · Headquarters: NEWTON, MA, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  31. Massachusetts National Rural Letter Carriers Ma

    EIN 237233871 · Headquarters: REHOBOTH, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  32. Massachusetts Network of Foster Care Alumni

    EIN 465725521 · Headquarters: Boston, MA, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  33. Massachusetts Neurologic Assoc Inc

    EIN 042763275 · Headquarters: WALTHAM, MA, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  34. Massachusetts Neuropsychological Society Inc

    EIN 222045842 · Headquarters: Plainville, MA, USA · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  35. Massachusetts Newspaper Publishers Assoc

    EIN 046058027 · Headquarters: Tewksbury, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  36. Massachusetts Nga 2010 Inc C/o David O'brien

    EIN 271420803 · Headquarters: CONCORD, MA, US · Community Improvement & Capacity Building · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  37. Massachusetts Nonprofit Network

    EIN 260169529 · Headquarters: BOSTON, MA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  38. Massachusetts Nuclear Medicine & Radiopharmaceutical Council

    EIN 994889532 · Headquarters: CONCORD, MA, US · Science & Technology · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  39. Massachusetts Nursery & Landscape Association Inc

    EIN 510151304 · Headquarters: PALMER, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  40. Massachusetts Nurses Association

    EIN 041591164 · Headquarters: CANTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  41. Massachusetts Nurses Foundation Inc

    EIN 042740257 · Headquarters: CANTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  42. Massachusetts Nurses Honor Guard Ann Os Watch

    EIN 883764121 · Headquarters: Kingston, MA, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  43. Massachusetts Officials and Coaches Charities

    EIN 273469499 · Headquarters: Sudbury, MA, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  44. Massachusetts Om Association Inc

    EIN 043481364 · Headquarters: Whitman, MA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  45. Massachusetts Oncology Patientssurvivors & Suppor

    EIN 332411086 · Headquarters: Humarock, MA, USA · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  46. Massachusetts Open-water Swimming Association

    EIN 275555560 · Headquarters: Waltham, MA, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  47. Massachusetts Operation Lifesaver Inc

    EIN 043188068 · Headquarters: Quincy, MA, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  48. Massachusetts Opportunity Alliance Inc

    EIN 990600335 · Headquarters: Burlington, MA, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990

  49. Massachusetts Orchid Society

    EIN 043035406 · Headquarters: Medford, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  50. Massachusetts Organization for Addiction Recovery Inc

    EIN 043505925 · Headquarters: BOSTON, MA, USA · Mental Health & Crisis Intervention · Latest available filing year: 2024 · Primary form: IRS Form 990

  51. Massachusetts Organization of Contemporary Art

    EIN 394894935 · Headquarters: BROOKLINE, MA, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  52. Massachusetts Organization of Educational Collaboratives

    EIN 042932552 · Headquarters: Hyannis Port, MA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  53. Massachusetts Organization of State Engineers & Scientists Moses

    EIN 042626073 · Headquarters: BOSTON, MA, USA · Employment · Latest available filing year: 2024 · Primary form: IRS Form 990

  54. Massachusetts Orthopaedic Association Inc

    EIN 042760289 · Headquarters: Natick, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  55. Massachusetts Outdoor Heritage Foundation Inc Attn Susan Sacco

    EIN 043556375 · Headquarters: WESTBOROUGH, MA, USA · Animal Related · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  56. Massachusetts Outlaws

    EIN 883648409 · Headquarters: SOUTH HADLEY, MA, US · Recreation & Sports · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  57. Massachusetts Oyster Project

    EIN 263112469 · Headquarters: Concord, MA, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  58. Massachusetts Package Store Association Inc

    EIN 041590893 · Headquarters: WESTBOROUGH, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  59. Massachusetts Pain Initiative

    EIN 834667186 · Headquarters: WALPOLE, MA, US · Public & Societal Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  60. Massachusetts Para-golfers Association Inc

    EIN 820632792 · Headquarters: Quincy, MA, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  61. Massachusetts Paralegal Association Inc

    EIN 042634163 · Headquarters: Boston, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  62. Massachusetts Parent Action

    EIN 822269311 · Headquarters: WOBURN, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  63. Massachusetts Parent Teacher Association Inc

    EIN 237283413 · Headquarters: Somerville, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  64. Massachusetts Parent Teacher Association Inc

    EIN 320267612 · Headquarters: Brockton, MA, US · Education · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  65. Massachusetts Parents United Inc

    EIN 821313683 · Headquarters: WOBURN, MA, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  66. Massachusetts Parole Preparation Partnership Inc

    EIN 923148888 · Headquarters: WESTBOROUGH, MA, US · Crime & Legal Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  67. Massachusetts Partners of the Americas Inc

    EIN 237256875 · Headquarters: Brockton, MA, US · Education · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  68. Massachusetts Partnerships for Youth Inc

    EIN 222975263 · Headquarters: Wakefield, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  69. Massachusetts Patient Advocacy Alliance Foundation Inc

    EIN 464926225 · Headquarters: Boston, MA, US · Education · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  70. Massachusetts Patient Advocacy Alliance Inc

    EIN 461844320 · Headquarters: Boston, MA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  71. Massachusetts Peace Action Education Fund

    EIN 711000061 · Headquarters: Cambridge, MA, USA · Public & Societal Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990

  72. Massachusetts Peace Action Inc

    EIN 043082045 · Headquarters: CAMBRIDGE, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  73. Massachusetts Pearls of Distinction Foundation Corporation

    EIN 873212706 · Headquarters: STOUGHTON, MA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  74. Massachusetts Pediatrics Fund Inc

    EIN 453818714 · Headquarters: Dorchester, MA, US · Health Care · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  75. Massachusetts Peer Review Organization Inc

    EIN 042920849 · Headquarters: WALTHAM, MA, USA · Health Care · Latest available filing year: 2012 · Primary form: IRS Form 990

  76. Massachusetts Peer Support for Nurses Inc

    EIN 992452608 · Headquarters: Fall River, MA, US · Mental Health & Crisis Intervention · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  77. Massachusetts Pet Partners Inc an Affiliate Delta Society Pet Ptnrs

    EIN 320130728 · Headquarters: North Andover, MA, US · Animal Related · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  78. Massachusetts Pharmacists Association Corp

    EIN 042041538 · Headquarters: Dracut, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  79. Massachusetts Pharmacists Association Foundation Inc

    EIN 571177518 · Headquarters: Dracut, MA, US · Health Care · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  80. Massachusetts Philharmonic Orchestra

    EIN 205615804 · Headquarters: LEXINGTON, MA, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  81. Massachusetts Physics Project

    EIN 333130295 · Headquarters: Lexington, MA, USA · Science & Technology · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  82. Massachusetts Police Accreditation Commission Inc

    EIN 450536436 · Headquarters: Amesbury, MA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  83. Massachusetts Police Association Inc C/o Jon Bailey

    EIN 042635521 · Headquarters: WALTHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  84. Massachusetts Police Association Legal Defense Fund Inc

    EIN 832062361 · Headquarters: WORCESTER, MA, USA · Employment · Latest available filing year: 2024 · Primary form: IRS Form 990

  85. Massachusetts Police Work Dog Association Inc

    EIN 450589758 · Headquarters: Easthampton, MA, US · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  86. Massachusetts Port Authority Fire Fighters IAFF Local S-2

    EIN 510226909 · Headquarters: Boston, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  87. Massachusetts Postal Employees Credit Union

    EIN 041564035 · Headquarters: LYNN, MA, USA · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990

  88. Massachusetts PPD Fund Inc

    EIN 831285489 · Headquarters: West Roxbury, MA, USA · Mental Health & Crisis Intervention · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  89. Massachusetts Pre Engineering Program Inc

    EIN 042674453 · Headquarters: Dorchester, MA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  90. Massachusetts Premier Soccer Inc

    EIN 043600069 · Headquarters: WELLESLEY, MA, USA · Recreation & Sports · Latest available filing year: 2019 · Primary form: IRS Form 990-EZ

  91. Massachusetts Preparatory Network Inc

    EIN 472004527 · Headquarters: BOSTON, MA, USA · Education · Latest available filing year: 2015 · Primary form: IRS Form 990

  92. Massachusetts Prevention Alliance

    EIN 454963321 · Headquarters: LINCOLN, MA, US · Mental Health & Crisis Intervention · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  93. Massachusetts Production Coalition Inc

    EIN 020755665 · Headquarters: BOSTON, MA, USA · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990

  94. Massachusetts Project 351 Inc

    EIN 454103159 · Headquarters: BOSTON, MA, USA · Youth Development · Latest available filing year: 2024 · Primary form: IRS Form 990

  95. Massachusetts Prosecutors Association Inc

    EIN 934482001 · Headquarters: WORCESTER, MA, USA · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  96. Massachusetts Prostate Cancer Coalition Inc C/o Green Associates Llc

    EIN 046946891 · Headquarters: BOSTON, MA, USA · Medical Research · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  97. Massachusetts Protective Mothers for Custodial Justice

    EIN 262601882 · Headquarters: Barnstable, MA, US · Education · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  98. Massachusetts Psychiatric Foundation Inc

    EIN 203824899 · Headquarters: WELLESLEY HILLS, MA, US · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  99. Massachusetts Psychiatric Society Inc

    EIN 042383343 · Headquarters: WALTHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  100. Massachusetts Psychological Association Inc

    EIN 042393951 · Headquarters: WELLESLEY, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

First page and all pages