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. Ocean Alliance Inc

    EIN 222573677 · Headquarters: Gloucester, MA, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  2. Ocean Arks International Inc

    EIN 042754315 · Headquarters: Falmouth, MA, USA · Environment · Latest available filing year: 2022 · Primary form: IRS Form 990-EZ

  3. Ocean Bluff Preservation Association Inc

    EIN 832736112 · Headquarters: Marshfield, MA, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  4. Ocean Breeze School Inc

    EIN 842910275 · Headquarters: MARBLEHEAD, MA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  5. Ocean Comeback Inc

    EIN 475547720 · Headquarters: Boston, MA, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  6. Ocean Genome Legacy Inc

    EIN 263026038 · Headquarters: IPSWICH, MA, USA · Science & Technology · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  7. Ocean Matters

    EIN 273543879 · Headquarters: Uxbridge, MA, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. Ocean River Institute Inc

    EIN 208273235 · Headquarters: Cambridge, MA, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  9. Ocean Shores Tenants Rights Association

    EIN 264348287 · Headquarters: Lynn, MA, US · Unknown & Unclassified · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  10. Ocean Side Performance Art Ctr Inc

    EIN 455260304 · Headquarters: HYANNIS, MA, USA · Arts, Culture & Humanities · Latest available filing year: 2021 · Primary form: IRS Form 990-EZ

  11. Ocean State Power Uxbridge Community

    EIN 110123059 · Headquarters: Uxbridge, MA, USA · Education · Latest available filing year: 2010 · Primary form: IRS Form 990-PF

  12. Oceana Soccer Program Inc

    EIN 475126097 · Headquarters: Orleans, MA, US · Recreation & Sports · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  13. Oceanic Labs Research Foundation

    EIN 870824831 · Headquarters: Cambridge, MA, USA · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-EZ

  14. Oceanic Research Group Inc

    EIN 223240599 · Headquarters: NORTH READING, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  15. Oceanquest Inc

    EIN 223229183 · Headquarters: EAST DENNIS, MA, USA · Science & Technology · Latest available filing year: 2011 · Primary form: IRS Form 990

  16. Oceanside Business Association Inc

    EIN 452688506 · Headquarters: Sagamore Beach, MA, US · Unknown & Unclassified · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  17. Oceanus the Inland Reef Inc

    EIN 204985751 · Headquarters: Barre, MA, US · Animal Related · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  18. Ocf Foundation Inc

    EIN 136007727 · Headquarters: ALFORD, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  19. Ochsner Charitable Foundation

    EIN 042897510 · Headquarters: BOLTON, MA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2022 · Primary form: IRS Form 990-PF

  20. Oci Healing Research Foundationinc

    EIN 208163977 · Headquarters: QUINCY, MA, USA · Medical Research · Latest available filing year: 2025 · Primary form: IRS Form 990

  21. Ocie M Downey Trust U W

    EIN 616156048 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  22. Ocpc Regional Operation & Managementinc

    EIN 222512346 · Headquarters: BROCKTON, MA, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990

  23. October as Italian Heritage Month Committee Inc

    EIN 043552107 · Headquarters: MEDFORD, MA, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  24. Octopus Garden

    EIN 205467424 · Headquarters: Winchendon, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  25. Ocular Immunology and Uveitis Foundation

    EIN 201891037 · Headquarters: WESTON, MA, USA · Medical Research · Latest available filing year: 2024 · Primary form: IRS Form 990

  26. Oda Boston Inc

    EIN 270548898 · Headquarters: EVERETT, MA, USA · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  27. Odaiko New England Inc

    EIN 300274483 · Headquarters: SOMERVILLE, MA, USA · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  28. Odd Fellows Home of Massachusetts Inc

    EIN 042104414 · Headquarters: WORCESTER, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  29. Oddball Foundation

    EIN 851283931 · Headquarters: Mansfield, MA, US · Mental Health & Crisis Intervention · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  30. Odies Place Inc

    EIN 471933049 · Headquarters: DARTMOUTH, MA, US · Animal Related · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  31. Odins Heart Wildlife Rehabilitation Inc

    EIN 874608006 · Headquarters: Springfield, MA, US · Animal Related · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  32. Odwin Learning Center Inc

    EIN 222680028 · Headquarters: BOSTON, MA, USA · Health Care · Latest available filing year: 2012 · Primary form: IRS Form 990-EZ

  33. Odyssey Chamber Players Inc

    EIN 112627050 · Headquarters: Marion, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  34. Odyssey Opera of Boston Inc

    EIN 462717193 · Headquarters: MALDEN, MA, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  35. Oedel Foundation

    EIN 046655524 · Headquarters: N ANDOVER, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-PF

  36. Oedipus Foundation

    EIN 046999201 · Headquarters: DOVER, MA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  37. Oel Foundation

    EIN 263678067 · Headquarters: Medford, MA, US · Human Services · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  38. Off the Canvas Inc

    EIN 813301966 · Headquarters: FRAMINGHAM, MA, USA · Youth Development · Latest available filing year: 2017 · Primary form: IRS Form 990-EZ

  39. Off the Rocks Animal Rescue Inc

    EIN 824438918 · Headquarters: Wellesley, MA, USA · Animal Related · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  40. Off-kendrik Inc

    EIN 825355719 · Headquarters: Norton, MA, USA · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  41. Off-season Hoops Inc

    EIN 471188427 · Headquarters: Methuen, MA, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  42. Office & Professional Employees Int'l Union Local 1295

    EIN 046113389 · Headquarters: WOBURN, MA, USA · Employment · Latest available filing year: 2014 · Primary form: IRS Form 990-EZ

  43. Office & Professional Employees International Union Local 6

    EIN 042028226 · Headquarters: BRAINTREE, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  44. Office & Professional Employees Opeiu Local 600

    EIN 042935859 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  45. Office & Professional Employees Opeiu453

    EIN 237280535 · Headquarters: CHARLESTOWN, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  46. Office of Ignatian Spirituality

    EIN 204996463 · Headquarters: WESTON, MA, USA · Religion Related · Latest available filing year: 2024 · Primary form: IRS Form 990

  47. Office Realty Corp C/O AEW CAPITAL MANAGEMENT LP

    EIN 411979129 · Headquarters: BOSTON, MA, USA · Community Improvement & Capacity Building · Latest available filing year: 2020 · Primary form: IRS Form 990

  48. Officer B J Voss Memorial Scholarship Inc

    EIN 474284606 · Headquarters: SOMERSET, MA, USA · Education · Latest available filing year: 2022 · Primary form: IRS Form 990-EZ

  49. Officer Michael Thomas Kominsky Sr Scholarship Fund

    EIN 994004580 · Headquarters: W BRIDGEWATER, MA, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  50. Officer Ronald Tarentino Jr Charitable Fund

    EIN 824072267 · Headquarters: LEICESTER, MA, USA · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  51. Officer Sean a Collier Memorial Fund

    EIN 813733988 · Headquarters: TYNGSBORO, MA, USA · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  52. Officer Tim Bourke Memorial Scholarship Fund Inc

    EIN 991098608 · Headquarters: Chelmford, MA, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  53. Officers Needing Assistance Inc

    EIN 352631217 · Headquarters: Norwood, MA, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  54. Offshore Doubles Sailing Association

    EIN 853192826 · Headquarters: Marblehead, MA, US · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  55. Offshore Wind Massachusetts Inc

    EIN 475480183 · Headquarters: BOSTON, MA, USA · Community Improvement & Capacity Building · Latest available filing year: 2016 · Primary form: IRS Form 990

  56. Ofoundation

    EIN 844960761 · Headquarters: Holliston, MA, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  57. Og Vibes Foundation Inc

    EIN 934425157 · Headquarters: North Chelmsford, MA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  58. Ogc Interoperability Instituteinc

    EIN 201040813 · Headquarters: WAYLAND, MA, USA · Community Improvement & Capacity Building · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ

  59. Ogden Codman Tr Uwo Dorothy Sfm Codman C/o Verrill Dana Llp

    EIN 046225360 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  60. Ohana New England Inc

    EIN 473288850 · Headquarters: Braintree, MA, USA · Youth Development · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  61. Ohio Independent Power Producers

    EIN 830530388 · Headquarters: BOSTON, MA, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  62. Ohr Shabbat Inc

    EIN 454083518 · Headquarters: BROOKLINE, MA, USA · Human Services · Latest available filing year: 2015 · Primary form: IRS Form 990-EZ

  63. Ohrenberger Community School Council

    EIN 042577580 · Headquarters: West Roxbury, MA, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  64. Ohvedect

    EIN 462400796 · Headquarters: Malden, MA, US · International, Foreign Affairs & National Security · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  65. OISTE Inc

    EIN 043581660 · Headquarters: Boston, MA, US · Arts, Culture & Humanities · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  66. Oiste The Massachusetts Latino Civic

    EIN 043553964 · Headquarters: Boston, MA, USA · Civil Rights, Social Action & Advocacy · Latest available filing year: 2012 · Primary form: IRS Form 990

  67. Ojfit Foundation Inc

    EIN 923327240 · Headquarters: Boston, MA, US · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  68. Ok Rhythmic Empire Inc

    EIN 851889231 · Headquarters: CLINTON, MA, USA · Youth Development · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  69. Oknooshoon Inc

    EIN 842188852 · Headquarters: BELMONT, MA, US · Animal Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  70. Okurowski Family Foundation

    EIN 260288492 · Headquarters: CONCORD, MA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  71. Okyeman Association of New England

    EIN 271317330 · Headquarters: WORCESTER, MA, US · International, Foreign Affairs & National Security · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  72. Olaleye Communications Inc

    EIN 042957149 · Headquarters: Boston, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  73. Olancho Aid Foundation Inc

    EIN 261979098 · Headquarters: ACCORD, MA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  74. Old American Catholic Christian Church Inc

    EIN 852021188 · Headquarters: HAVERHILL, MA, USA · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  75. Old Bridgewater Historical Society

    EIN 046121711 · Headquarters: West Bridgewater, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  76. Old Charlestown Schoolboys Association

    EIN 043468538 · Headquarters: Charlestown, MA, USA · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  77. Old Charlestown Schoolgirls Association Inc

    EIN 300945857 · Headquarters: CHARLESTOWN, MA, USA · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  78. Old Chelmsford Garrison House Association

    EIN 042721004 · Headquarters: Chelmsford, MA, USA · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990

  79. Old City Hall Landmark Corporation

    EIN 042469122 · Headquarters: BOSTON, MA, USA · Arts, Culture & Humanities · Latest available filing year: 2018 · Primary form: IRS Form 990-EZ

  80. Old Colony & Fall River RR Museum

    EIN 042952729 · Headquarters: Fall River, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  81. Old Colony Beneficial Assoc Corp

    EIN 046049765 · Headquarters: WEST SPRINGFIELD, MA, USA · Mutual & Membership Benefit · Latest available filing year: 2017 · Primary form: IRS Form 990-EZ

  82. Old Colony Club Inc

    EIN 042081412 · Headquarters: PLYMOUTH, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  83. Old Colony Cougars Pto Inc

    EIN 843702124 · Headquarters: ROCHESTER, MA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  84. Old Colony Council Inc Boy Scouts of America #249

    EIN 042104804 · Headquarters: CANTON, MA, USA · Youth Development · Latest available filing year: 2016 · Primary form: IRS Form 990

  85. Old Colony Dog Training

    EIN 851167451 · Headquarters: SALEM, MA, USA · Animal Related · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  86. Old Colony Educational Foundation Inc

    EIN 820883633 · Headquarters: Rochester, MA, USA · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  87. Old Colony Elder Services Inc

    EIN 042545236 · Headquarters: BROCKTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  88. Old Colony Habitat for Humanity

    EIN 043014778 · Headquarters: RAYNHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  89. Old Colony Highlanders Pipe Band

    EIN 813042527 · Headquarters: Middleborough, MA, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  90. Old Colony Historical Society

    EIN 042308455 · Headquarters: TAUNTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  91. Old Colony Hospice Inc

    EIN 042793637 · Headquarters: West Bridgewater, MA, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  92. Old Colony Library Network Inc

    EIN 042925259 · Headquarters: BRAINTREE, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  93. Old Colony Model Railroad & Technical Society

    EIN 043410675 · Headquarters: Raynham, MA, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  94. Old Colony Montessori School Inc

    EIN 042319056 · Headquarters: HINGHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  95. Old Colony Revitalization Corporation

    EIN 371610605 · Headquarters: BOSTON, MA, USA · Housing & Shelter · Latest available filing year: 2024 · Primary form: IRS Form 990

  96. Old Colony Special Operations Group Inc

    EIN 261628105 · Headquarters: Pembroke, MA, US · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  97. Old Colony Sportsmens Association

    EIN 046112319 · Headquarters: PEMBROKE, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  98. Old Colony Womens Soccer League

    EIN 820639819 · Headquarters: Weymouth, MA, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  99. Old Colony YMCA

    EIN 042125014 · Headquarters: BROCKTON, MA, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  100. Old Colony Ymca Wellness Services Inc

    EIN 843604342 · Headquarters: BROCKTON, MA, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

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