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. International Society of Protistologists Inc

    EIN 420959367 · Headquarters: Woods Hole, MA, USA · Science & Technology · Latest available filing year: 2024 · Primary form: IRS Form 990

  2. International Society of Vaccines Inc

    EIN 262521865 · Headquarters: WORCESTER, MA, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990

  3. International Space Academy Foundation Incorporated

    EIN 462539779 · Headquarters: Worcester, MA, US · Science & Technology · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  4. International Space University Org Inc

    EIN 521511773 · Headquarters: WEBSTER, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  5. International Standing Ice Hockey Federation

    EIN 202243990 · Headquarters: Sharon, MA, US · Recreation & Sports · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  6. International Sustainable Development Institute

    EIN 465076027 · Headquarters: Boston, MA, US · Public & Societal Benefit · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  7. International Towns Federation

    EIN 611864385 · Headquarters: CAMBRIDGE, MA, US · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  8. International Training in Communication

    EIN 900061809 · Headquarters: Maynard, MA, US · Arts, Culture & Humanities · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  9. International Transmembrane Transporter Society

    EIN 471638910 · Headquarters: Worcester, MA, US · Education · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  10. International Trauma and Disaster Institute Inc

    EIN 043412237 · Headquarters: BOSTON, MA, USA · International, Foreign Affairs & National Security · Latest available filing year: 2013 · Primary form: IRS Form 990

  11. International Uechi-ryu Karate Federation Inc

    EIN 823706843 · Headquarters: Concord, MA, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  12. International Union LOCAL 2322 UAW

    EIN 043174430 · Headquarters: Holyoke, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  13. International Union of Biochemistry and Molecular Biology Inc

    EIN 208903490 · Headquarters: Wakefield, MA, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  14. International Union of Electrical Radio & Machine Workers Cio Bldg A

    EIN 042577599 · Headquarters: Lynn, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  15. International Union of Elevator Constructors Local Union No 4

    EIN 041338415 · Headquarters: DORCHESTER, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  16. International Union of Operating Eng Local 98 Employers Cooperative Trust

    EIN 043432489 · Headquarters: SOUTHWICK, MA, USA · Employment · Latest available filing year: 2025 · Primary form: IRS Form 990

  17. International Union of Operating Engineers Local 4

    EIN 041445210 · Headquarters: MEDWAY, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  18. International Union of Operating Engineers Local 4 Labor Mgt Coop Trust

    EIN 046254465 · Headquarters: MEDWAY, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  19. International Union of Operating Engineers Local 877

    EIN 042382284 · Headquarters: NORWOOD, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  20. International Union of Operating Engineers Local 98

    EIN 041673765 · Headquarters: SOUTHWICK, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  21. International Union of Operating Engineers Local 98 Health & Welfare Fund

    EIN 042123707 · Headquarters: SOUTHWICK, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  22. International Union of Painter and Allied Trades Local Union 1138

    EIN 046119606 · Headquarters: WEYMOUTH, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  23. International Union of Painters & Allied Trades Local 257

    EIN 041472099 · Headquarters: ROSLINDALE, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  24. International Union of Painters & Allied Trades Local 391

    EIN 042028446 · Headquarters: ROSLINDALE, MA, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  25. International Union of Painters & Allied Trades Local 402

    EIN 046130588 · Headquarters: ROSLINDALE, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  26. International Union of Painters & Allied Trades Local 939

    EIN 046145958 · Headquarters: ROSLINDALE, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  27. International Union of Painters and Allied Trades Local 1911

    EIN 061269649 · Headquarters: STOUGHTON, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  28. International Union of Painters and Allied Trades Local Union 48

    EIN 041337186 · Headquarters: ROSLINDALE, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  29. International Union Security Police Fire Professionals of America

    EIN 562287490 · Headquarters: LEICESTER, MA, US · Crime & Legal Related · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  30. International Union Uaw Local 1596

    EIN 042446487 · Headquarters: CANTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  31. International Union Uaw Local 422

    EIN 042066066 · Headquarters: MANSFIELD, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  32. International Union United Auto Aerospace & Agricultural Workers

    EIN 852466370 · Headquarters: Cambridge, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  33. International Veterans Care Services

    EIN 832010453 · Headquarters: LAWRENCE, MA, US · Food, Agriculture & Nutrition · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  34. International Veterans Chorus

    EIN 814482083 · Headquarters: LEOMINSTER, MA, US · Arts, Culture & Humanities · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  35. International Volleyball Hall of Fame Inc

    EIN 042853971 · Headquarters: Holyoke, MA, USA · Arts, Culture & Humanities · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  36. International Women's Forum of Massachusetts Inc

    EIN 043151053 · Headquarters: Boxborough, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  37. International Workshop on Case Inc

    EIN 043052799 · Headquarters: Burlington, MA, US · International, Foreign Affairs & National Security · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  38. International Workshop on Scleroderma Research Corporation

    EIN 814302337 · Headquarters: ARLINGTON, MA, US · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  39. International World War Museum Inc

    EIN 010819156 · Headquarters: North Adams, MA, US · Arts, Culture & Humanities · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  40. International Youth Development Foundation

    EIN 650917698 · Headquarters: WELLESLEY, MA, USA · Youth Development · Latest available filing year: 2017 · Primary form: IRS Form 990-PF

  41. Internatl Assoc of Ff Local 1847

    EIN 237082500 · Headquarters: WILBRAHAM, MA, USA · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2015 · Primary form: IRS Form 990-EZ

  42. Internatl Behavioural & Neural Genetics Society

    EIN 900652373 · Headquarters: WAKEFIELD, MA, USA · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2017 · Primary form: IRS Form 990-EZ

  43. Internet Interventions Incorporated

    EIN 208280387 · Headquarters: Chelsea, MA, US · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  44. Internetbarorg Inc C/o Kenneth J Vacovec Esq

    EIN 202682863 · Headquarters: NEWTON, MA, USA · Crime & Legal Related · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  45. Internetbarorg Institute Inc C/o Kenneth J Vacovec Esq

    EIN 202683134 · Headquarters: NEWTON, MA, USA · Crime & Legal Related · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  46. Interplex Inc

    EIN 612258957 · Headquarters: Medford, MA, US · Science & Technology · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  47. Interrelated Arts Foundation

    EIN 042976593 · Headquarters: MARBLEHEAD, MA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  48. Interseminarian - Project Place Inc

    EIN 042457732 · Headquarters: BOSTON, MA, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  49. Interstitial Arts Foundation Inc

    EIN 300197669 · Headquarters: Boston, MA, US · Arts, Culture & Humanities · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  50. Intertribal Council of New England Inc

    EIN 823373369 · Headquarters: West Boylston, MA, US · Education · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  51. Intervalley Project Inc

    EIN 043552640 · Headquarters: NEWTON, MA, USA · Human Services · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ

  52. Interweave Continental Inc

    EIN 043303249 · Headquarters: Sharon, MA, US · Education · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  53. Intimate Partner Violence Project Inc

    EIN 453504241 · Headquarters: Malden, MA, US · Crime & Legal Related · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  54. Intl Assoc of Bridge Structural and Ornamental Iron Workers Local 807

    EIN 510194093 · Headquarters: FRAMINGHAM, MA, USA · Employment · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  55. Intl Assoc of Electrical Inspectors

    EIN 237282410 · Headquarters: PEABODY, MA, USA · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ

  56. Intl Assoc of Lions Club Hatfield

    EIN 046137699 · Headquarters: Hatfield, MA, USA · Mutual & Membership Benefit · Latest available filing year: 2019 · Primary form: IRS Form 990-EZ

  57. Intl Behavioural & Neural Genetics Society

    EIN 823270503 · Headquarters: WAKEFIELD, MA, USA · Medical Research · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  58. Intl Center for Peace Through Culture

    EIN 112462753 · Headquarters: Monterey, MA, US · International, Foreign Affairs & National Security · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  59. Intl Federation of American Homing Pigeon Fanciers

    EIN 912141659 · Headquarters: NORTH WEYMOUTH, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  60. Intl Longshoreman Local 805 805 Ila

    EIN 041280631 · Headquarters: STONEHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  61. Intl Union of Electronic Electrical Salaried Mach&furn Workers Aflcio

    EIN 043251771 · Headquarters: Marblehead, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  62. Into Action Recovery Inc

    EIN 473287687 · Headquarters: TEWKSBURY, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  63. Into Your Art Inc

    EIN 900813746 · Headquarters: Boston, MA, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  64. Intra-family Trauma Resources Network Inc

    EIN 222948690 · Headquarters: Worcester, MA, US · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  65. Intrafraternal Community Development Corporation

    EIN 042031622 · Headquarters: Brighton, MA, US · Community Improvement & Capacity Building · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  66. Intrepid Alliance Inc Co Browne Consulting Group

    EIN 352711268 · Headquarters: CAMBRIDGE, MA, USA · Medical Research · Latest available filing year: 2024 · Primary form: IRS Form 990

  67. Intrepid Veteran Inc

    EIN 460851163 · Headquarters: Tewksbury, MA, US · Human Services · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  68. Inventors Association of New England

    EIN 042628529 · Headquarters: Lexington, MA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  69. Inversant Inc

    EIN 271462229 · Headquarters: LYNN, MA, USA · Youth Development · Latest available filing year: 2022 · Primary form: IRS Form 990

  70. Invest in A Girl

    EIN 873826469 · Headquarters: Somerville, MA, USA · Civil Rights, Social Action & Advocacy · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  71. Invest in Belmont

    EIN 934254190 · Headquarters: Belmont, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  72. Invest in Children Foundation Inc

    EIN 651032372 · Headquarters: Lexington, MA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  73. Invest in Doctors

    EIN 831959995 · Headquarters: CANTON, MA, US · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  74. Invest In Girls Inc

    EIN 453771260 · Headquarters: Waltham, MA, USA · Youth Development · Latest available filing year: 2018 · Primary form: IRS Form 990

  75. Invest in Knowledge Initiative Inc

    EIN 201976034 · Headquarters: Jamaica Plain, MA, USA · Social Science · Latest available filing year: 2012 · Primary form: IRS Form 990

  76. Invest in Others Charitable Foundation Inc

    EIN 205036808 · Headquarters: BOSTON, MA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990

  77. Investment in Youth Foundation

    EIN 222557453 · Headquarters: Plymouth, MA, US · Recreation & Sports · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  78. Investment Management Education Alliance

    EIN 431578348 · Headquarters: NEEDHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  79. Investor Suffrage Movement

    EIN 270297203 · Headquarters: Belmont, MA, US · Civil Rights, Social Action & Advocacy · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  80. Investors Networking Group of New England

    EIN 030542252 · Headquarters: Newtonville, MA, US · Community Improvement & Capacity Building · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  81. Investours Inc

    EIN 800629795 · Headquarters: CAMBRIDGE, MA, USA · International, Foreign Affairs & National Security · Latest available filing year: 2013 · Primary form: IRS Form 990

  82. Invictus Forever Inc

    EIN 845029312 · Headquarters: WESTON, MA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  83. Invictus Youth Wrestling Inc

    EIN 923801887 · Headquarters: Boston, MA, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  84. Invincible Project Inc

    EIN 832767082 · Headquarters: Springfield, MA, US · Education · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  85. Invisible International Inc

    EIN 844626505 · Headquarters: Cambridge, MA, US · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  86. Invisible Together Inc

    EIN 852354237 · Headquarters: GREAT BARRINGTON, MA, US · Health Care · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  87. Invivo Institute Research Foundatio

    EIN 991386576 · Headquarters: GREAT BARRINGTON, MA, USA · Medical Research · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  88. Inward Bound Mindfulness Education Inc

    EIN 273029390 · Headquarters: ATTLEBORO, MA, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  89. Inwardbound Wilderness Inc C/o Kimberly Thatcher

    EIN 452436277 · Headquarters: EASTHAM, MA, USA · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  90. ION

    EIN 870823654 · Headquarters: BOLTON, MA, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  91. Ion Inc

    EIN 223032677 · Headquarters: CAMBRIDGE, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  92. Iorio Charitable Foundation Dtd 1141993

    EIN 046745180 · Headquarters: WORCESTER, MA, USA · Crime & Legal Related · Latest available filing year: 2023 · Primary form: IRS Form 990-PF

  93. Iota Gamma Upsilon House Corp

    EIN 043188853 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  94. Iowas Future Fund Inc

    EIN 393849537 · Headquarters: Beverly, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  95. Ipara Remo Descendants Charities Incorporated

    EIN 271896325 · Headquarters: JAMAICA PLAIN, MA, US · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  96. Ipci-USA Inc

    EIN 412056090 · Headquarters: Whitman, MA, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  97. Ipswich Art Association

    EIN 882657116 · Headquarters: Ipswich, MA, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  98. Ipswich Babe Ruth Baseball

    EIN 824379094 · Headquarters: Ipswich, MA, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  99. Ipswich Bay Yacht Club

    EIN 046125498 · Headquarters: IPSWICH, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  100. Ipswich Caring Inc

    EIN 043288206 · Headquarters: IPSWICH, MA, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

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