Nonprofits in Williamstown, Massachusetts

Nonprofits in Williamstown, Massachusetts. Browse 99 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. Aiki Extensions Inc

    EIN 364248419 · Headquarters: Williamstown, MA, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  2. Alice Shaver Foundation

    EIN 137483764 · Headquarters: Williamstown, MA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  3. American Guild of Organists

    EIN 046111737 · Headquarters: Williamstown, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  4. American Legion

    EIN 042394558 · Headquarters: Williamstown, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  5. American Legion Auxiliary

    EIN 043126390 · Headquarters: Williamstown, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  6. Art Museum Partnership for Education In

    EIN 462997039 · Headquarters: Williamstown, MA, USA · Arts, Culture & Humanities · Latest available filing year: 2015 · Primary form: IRS Form 990-EZ

  7. Asis International Inc

    EIN 352335280 · Headquarters: Williamstown, MA, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. Bayit - Building Jewish

    EIN 851882768 · Headquarters: WILLIAMSTOWN, MA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  9. Berkshire Academy for Advanced Musical Studies

    EIN 850745771 · Headquarters: Williamstown, MA, US · Arts, Culture & Humanities · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  10. Berkshire Cultural and Educational Initiative Inc

    EIN 371510427 · Headquarters: WILLIAMSTOWN, MA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2011 · Primary form: IRS Form 990-PF

  11. Berkshire Helping Hands Inc

    EIN 844821057 · Headquarters: Williamstown, MA, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  12. Berkshire Mediation Services

    EIN 043057430 · Headquarters: WILLIAMSTOWN, MA, US · Crime & Legal Related · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  13. Buxton Schoolinc

    EIN 042219425 · Headquarters: WILLIAMSTOWN, MA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  14. Camp Hart Inc

    EIN 043395101 · Headquarters: WILLIAMSTOWN, MA, US · Recreation & Sports · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  15. Chaos Theory Inc C/o Jenny Herzog

    EIN 923052653 · Headquarters: WILLIAMSTOWN, MA, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  16. Christmas Brook Figure Skating Club Inc

    EIN 042691330 · Headquarters: Williamstown, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  17. Citizen Media Inc

    EIN 042741139 · Headquarters: WILLIAMSTOWN, MA, US · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  18. Cobble Hill Farm Education & Rescue Center Inc

    EIN 883369166 · Headquarters: WILLIAMSTOWN, MA, USA · Animal Related · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  19. Communication Workers of America

    EIN 042862133 · Headquarters: williamstown, MA, US · Employment · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  20. Community Images Inc

    EIN 043407257 · Headquarters: WILLIAMSTOWN, MA, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  21. Country Dance & Song Society Inc

    EIN 832664683 · Headquarters: Williamstown, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  22. Destination Williamstown Inc

    EIN 472774322 · Headquarters: WILLIAMSTOWN, MA, USA · Arts, Culture & Humanities · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ

  23. East Mountain Sportsmans Club Inc

    EIN 042702031 · Headquarters: Williamstown, MA, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  24. Fairbanks Family Charitable Foundation

    EIN 261848892 · Headquarters: WILLIAMSTOWN, MA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  25. Fore All Inc

    EIN 522036145 · Headquarters: Williamstown, MA, US · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  26. Friends of David&joyce Milne Public Library

    EIN 043040565 · Headquarters: WILLIAMSTOWN, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  27. Fund for New World Development Inc

    EIN 453181101 · Headquarters: WILLIAMSTOWN, MA, USA · International, Foreign Affairs & National Security · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  28. Givenshare Inc

    EIN 481267481 · Headquarters: Williamstown, MA, US · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  29. Global Pantry Incorporated

    EIN 275007090 · Headquarters: Williamstown, MA, US · Unknown & Unclassified · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  30. Greylock Abc Inc

    EIN 237010777 · Headquarters: WILLIAMSTOWN, MA, USA · Education · Latest available filing year: 2018 · Primary form: IRS Form 990

  31. Greylock Flying Club Inc

    EIN 830926677 · Headquarters: Williamstown, MA, US · Recreation & Sports · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  32. Higher Ground Inc

    EIN 453644526 · Headquarters: Williamstown, MA, USA · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2016 · Primary form: IRS Form 990-EZ

  33. Hoosic River Watershed Association

    EIN 042940625 · Headquarters: WILLIAMSTOWN, MA, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  34. Information Trust Exchange Governing Association

    EIN 815393558 · Headquarters: Williamstown, MA, US · Public & Societal Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  35. Institute for International Cooperation & Development Inc

    EIN 222778876 · Headquarters: WILLIAMSTOWN, MA, USA · International, Foreign Affairs & National Security · Latest available filing year: 2016 · Primary form: IRS Form 990

  36. Institute for the Quantitative Study of Equity Inc

    EIN 842719356 · Headquarters: WILLIAMSTOWN, MA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  37. Institute for the Visualization of History Inc

    EIN 043568562 · Headquarters: WILLIAMSTOWN, MA, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  38. Jazz in the Berkshires Inc C/o Daphne Bolden

    EIN 874624931 · Headquarters: WILLIAMSTOWN, MA, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  39. Kauai Foundation for Continuing Education

    EIN 990248818 · Headquarters: Williamstown, MA, USA · Education · Latest available filing year: 2014 · Primary form: IRS Form 990-EZ

  40. Lasagna Love Inc

    EIN 852949240 · Headquarters: WILLIAMSTOWN, MA, USA · Food, Agriculture & Nutrition · Latest available filing year: 2024 · Primary form: IRS Form 990

  41. League of Women Voters of Massachusetts

    EIN 042686611 · Headquarters: Williamstown, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  42. Lending a Hand in the Warm Heart of Africa Inc

    EIN 800783850 · Headquarters: Williamstown, MA, US · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  43. Liberal Arts Diversity Officers Consortium Incorporated

    EIN 823951921 · Headquarters: WILLIAMSTOWN, MA, USA · Community Improvement & Capacity Building · Latest available filing year: 2022 · Primary form: IRS Form 990-EZ

  44. Lions Club of North Adams Inc

    EIN 992668253 · Headquarters: WILLIAMSTOWN, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  45. Massachusetts Teachers Association

    EIN 510171943 · Headquarters: Williamstown, MA, US · Education · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  46. Master Wardens & Members of the Grand Lodge of Masons in Mass

    EIN 237146548 · Headquarters: Williamstown, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  47. Master Wardens & Members of the Grand Lodge of Masons in Mass

    EIN 465237661 · Headquarters: Williamstown, MA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  48. Milton & Dorothy Sarnoff Raymond Foundation

    EIN 356803768 · Headquarters: Williamstown, MA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  49. Mohawk Soaring Club Inc

    EIN 141628144 · Headquarters: WILLIAMSTOWN, MA, US · Science & Technology · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  50. National Association of Dance and Affiliated Arts

    EIN 043522644 · Headquarters: WILLIAMSTOWN, MA, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  51. New Phoenix Inc

    EIN 222973667 · Headquarters: Williamstown, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  52. Northern Berkshire Chorale

    EIN 043576374 · Headquarters: Williamstown, MA, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  53. Northern Berkshire Medical Pc

    EIN 814023607 · Headquarters: WILLIAMSTOWN, MA, USA · Health Care · Latest available filing year: 2023 · Primary form: IRS Form 990

  54. Overland Summers Foundation Inc

    EIN 824038008 · Headquarters: WILLIAMSTOWN, MA, USA · Youth Development · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  55. Pine Cobble School Incorporated

    EIN 042105910 · Headquarters: WILLIAMSTOWN, MA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  56. Pop Cares Inc

    EIN 460661262 · Headquarters: WILLIAMSTOWN, MA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990

  57. Purple Valley Aquatics Club Inc

    EIN 994605623 · Headquarters: Williamstown, MA, USA · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  58. Purple Valley Aquatics Inc

    EIN 460675863 · Headquarters: Williamstown, MA, USA · Recreation & Sports · Latest available filing year: 2020 · Primary form: IRS Form 990-PF

  59. Reading Institute Inc

    EIN 043462889 · Headquarters: WILLIAMSTOWN, MA, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  60. Remedy Hall Inc

    EIN 933800016 · Headquarters: WILLIAMSTOWN, MA, USA · Human Services · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  61. Rheinfrank Foundation Inc

    EIN 431780177 · Headquarters: WILLIAMSTOWN, MA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2020 · Primary form: IRS Form 990-PF

  62. Roomful of Teeth Vocal Arts Project

    EIN 261789084 · Headquarters: WILLIAMSTOWN, MA, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  63. Rotary Club of Williamstown Foundation Inc

    EIN 020746797 · Headquarters: WILLIAMSTOWN, MA, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  64. Rotary International

    EIN 046189113 · Headquarters: WILLIAMSTOWN, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  65. Sand Springs Recreational Center

    EIN 454171207 · Headquarters: WILLIAMSTOWN, MA, USA · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990

  66. Shirley Brownrigg Charitable Trust

    EIN 137059466 · Headquarters: Williamstown, MA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  67. Society for the Study of Japanese Religions

    EIN 463902108 · Headquarters: Williamstown, MA, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  68. South Williamstown Community Association Inc

    EIN 042751459 · Headquarters: Williamstown, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  69. St Kateri Institute Inc

    EIN 882122559 · Headquarters: WILLIAMSTOWN, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  70. Stephen Belouin Youth Sports Fund

    EIN 743236762 · Headquarters: williamstown, MA, US · Recreation & Sports · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  71. Sterling and Francine Clark Art Institute

    EIN 042163004 · Headquarters: WILLIAMSTOWN, MA, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  72. Store at Five Corners Stewardship Association Inc

    EIN 873392205 · Headquarters: WILLIAMSTOWN, MA, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  73. Supporting Cultures in Peril Inc

    EIN 461549976 · Headquarters: Williamstown, MA, USA · Arts, Culture & Humanities · Latest available filing year: 2016 · Primary form: IRS Form 990-EZ

  74. Taconic Valley Christian Fellowship

    EIN 043355779 · Headquarters: Williamstown, MA, US · Religion Related · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  75. Tdiyou Incorporated

    EIN 884208935 · Headquarters: Williamstown, MA, US · Public & Societal Benefit · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  76. The Artist Book Foundation

    EIN 452671486 · Headquarters: WILLIAMSTOWN, MA, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  77. Toastmasters International

    EIN 204788677 · Headquarters: Williamstown, MA, US · Public & Societal Benefit · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  78. Toastmasters International

    EIN 237147502 · Headquarters: Williamstown, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  79. Tori Rumbolt Athletic Scholarship

    EIN 470978719 · Headquarters: Williamstown, MA, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  80. Turner House Living Center for Veterans Inc

    EIN 043223831 · Headquarters: WILLIAMSTOWN, MA, USA · Public & Societal Benefit · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ

  81. University of Massachusetts

    EIN 843571686 · Headquarters: Williamstown, MA, US · Youth Development · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  82. Williams College

    EIN 042104847 · Headquarters: WILLIAMSTOWN, MA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  83. Williams College Land Foundation Inc

    EIN 043158500 · Headquarters: Williamstown, MA, US · Education · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  84. Williams Sideline Quarterback Club Inc

    EIN 222509971 · Headquarters: WILLIAMSTOWN, MA, US · Human Services · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  85. Williamstown Art Conservation Center Inc

    EIN 042629476 · Headquarters: WILLIAMSTOWN, MA, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  86. Williamstown Chamber of Commerce

    EIN 237042933 · Headquarters: WILLIAMSTOWN, MA, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  87. Williamstown Community Association

    EIN 046038623 · Headquarters: WILLIAMSTOWN, MA, USA · Community Improvement & Capacity Building · Latest available filing year: 2012 · Primary form: IRS Form 990-EZ

  88. Williamstown Community Chest

    EIN 046044550 · Headquarters: WILLIAMSTOWN, MA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2023 · Primary form: IRS Form 990

  89. Williamstown Community Preschool Inc

    EIN 042496082 · Headquarters: WILLIAMSTOWN, MA, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  90. Williamstown Cooperative Nursery Inc

    EIN 042395620 · Headquarters: WILLIAMSTOWN, MA, USA · Education · Latest available filing year: 2011 · Primary form: IRS Form 990-EZ

  91. Williamstown Film Festival Inc

    EIN 043439329 · Headquarters: WILLIAMSTOWN, MA, US · Arts, Culture & Humanities · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  92. Williamstown Garden Club

    EIN 010819714 · Headquarters: WILLIAMSTOWN, MA, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  93. Williamstown Historical Museum

    EIN 046118588 · Headquarters: Williamstown, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  94. Williamstown Meetinghouse Preservation Fund Inc

    EIN 854185260 · Headquarters: WILLIAMSTOWN, MA, USA · Public & Societal Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  95. Williamstown Rural Lands Foundation

    EIN 042940686 · Headquarters: WILLIAMSTOWN, MA, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  96. Williamstown Soccer Club Inc

    EIN 392674181 · Headquarters: Williamstown, MA, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  97. Williamstown Theatre Foundationinc

    EIN 042237311 · Headquarters: WILLIAMSTOWN, MA, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  98. Williamstown Youth Center Inc

    EIN 042105836 · Headquarters: WILLIAMSTOWN, MA, USA · Youth Development · Latest available filing year: 2024 · Primary form: IRS Form 990

  99. WilliNet

    EIN 043253056 · Headquarters: Williamstown, MA, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990