Nonprofits in Greenwich, Connecticut

Nonprofits in Greenwich, Connecticut. Browse 725 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. The Karen E Kohler Charitable Foundation

    EIN 133922666 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2020 · Primary form: IRS Form 990-PF

  2. The Kurzrok Foundation Inc

    EIN 061367091 · Headquarters: GREENWICH, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  3. The Lehrman Institute

    EIN 237218534 · Headquarters: GREENWICH, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  4. The Lenore & Howard Klein Foundation Inc

    EIN 133673818 · Headquarters: Greenwich, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  5. The Limpe Foundation

    EIN 133639369 · Headquarters: GREENWICH, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  6. The Lincoln Institute

    EIN 061605946 · Headquarters: GREENWICH, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2014 · Primary form: IRS Form 990-PF

  7. The Lurito Family Foundation

    EIN 223698817 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2019 · Primary form: IRS Form 990-PF

  8. The Lynn and Robert Zimmer Family Foundation (for Joan Dalsheim Nevin)

    EIN 137222579 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  9. The Lynn and Robert Zimmer Family Foundation (for John Dalsheim)

    EIN 206066441 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  10. The M Foundation Inc

    EIN 223732277 · Headquarters: Greenwich, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2015 · Primary form: IRS Form 990-PF

  11. The Magnaverde Foundation Inc

    EIN 061442891 · Headquarters: GREENWICH, CT, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  12. The Martin V Alonzo Family Found C/o Marlene Alonzo Director

    EIN 261623392 · Headquarters: GREENWICH, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  13. The Mary Ann and Lawrence Tucker Foundation

    EIN 542140479 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  14. The Matschullat Family Foundation

    EIN 137299030 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  15. The Mattis Family Foundation

    EIN 352765948 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  16. The Maychip Family Foundation Inc

    EIN 223720987 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2013 · Primary form: IRS Form 990-PF

  17. The Mayer Family Foundation

    EIN 133531984 · Headquarters: Greenwich, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  18. The McAvity Family Foundation

    EIN 263887979 · Headquarters: Greenwich, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  19. The Mckenzie Foundation Inc

    EIN 061508410 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2023 · Primary form: IRS Form 990-PF

  20. The Metro Ny Assn for Applied Psychology Co Nicole Keyser

    EIN 237064378 · Headquarters: GREENWICH, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  21. The Michael & Carol Lowenstein Foundation Inc

    EIN 205953051 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2023 · Primary form: IRS Form 990-PF

  22. The Milbrook Club Inc

    EIN 060453148 · Headquarters: GREENWICH, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  23. The Milton and Ella Upsher Foundation

    EIN 137102549 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2018 · Primary form: IRS Form 990-PF

  24. The Natalie Foundation Inc

    EIN 992919526 · Headquarters: GREENWICH, CT, USA · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990

  25. The Ninth District Veterans Association Inc

    EIN 060672078 · Headquarters: Greenwich, CT, USA · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  26. The Ohnell Family Foundation

    EIN 223219022 · Headquarters: GREENWICH, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  27. The Per and Astrid Heidenreich Family Foundation

    EIN 206382658 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  28. The Perryridge Corporation

    EIN 061207316 · Headquarters: GREENWICH, CT, USA · Health Care · Latest available filing year: 2023 · Primary form: IRS Form 990

  29. The Peter J Frenkel Foundation Inc

    EIN 431963137 · Headquarters: Greenwich, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2018 · Primary form: IRS Form 990-PF

  30. The Peter Savitz Foundation

    EIN 133748074 · Headquarters: GREENWICH, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  31. The Pinkus Foundation

    EIN 134051212 · Headquarters: Greenwich, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  32. The Pohly Family Foundation

    EIN 020710984 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  33. The Prabhu Family Foundation

    EIN 274189009 · Headquarters: Greenwich, CT, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  34. The Preschool at the Second Congregational Church

    EIN 261522371 · Headquarters: Greenwich, CT, United States · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  35. The Putnam Indian Field School Inc

    EIN 060646680 · Headquarters: GREENWICH, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  36. The Raymond Falk Foundation

    EIN 871863297 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  37. The Red Ribbon Foundation Inc

    EIN 061427158 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2014 · Primary form: IRS Form 990-EZ

  38. The Resource Foundation Inc

    EIN 222870501 · Headquarters: GREENWICH, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  39. The Rev Peter N Kyriakos Endowment Fund Inc

    EIN 383753346 · Headquarters: GREENWICH, CT, USA · Animal Related · Latest available filing year: 2018 · Primary form: IRS Form 990-EZ

  40. The Reynolds Foundation

    EIN 311679076 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2012 · Primary form: IRS Form 990-PF

  41. The Riversville Foundation C/o Cbiz Advisors Llc

    EIN 066504128 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  42. The Robert a & Elizabeth R Jeffe Foundation

    EIN 066455294 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  43. The Robert E Enslein Foundation Inc

    EIN 136270043 · Headquarters: GREENWICH, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  44. The Robert E Marks Foundation

    EIN 261289603 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2022 · Primary form: IRS Form 990-PF

  45. The Rosencrans Family Foundation Inc C/o Marjorie Rosencrans

    EIN 061469013 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  46. The Round Hill Club Incorporated

    EIN 060516620 · Headquarters: GREENWICH, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  47. The Russell Maguire Foundation Inc

    EIN 136162698 · Headquarters: GREENWICH, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  48. The Ruth W Brown Foundation Sally C Harris Trustee

    EIN 061409590 · Headquarters: Greenwich, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  49. The Rutledge Family Foundation

    EIN 810861760 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  50. The Rye September 11 2001 Memorial Inc

    EIN 203695051 · Headquarters: Greenwich, CT, US · Arts, Culture & Humanities · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  51. The Santoro Family Charitable Foundation

    EIN 205676915 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  52. The Schiele Family Foundation Inc

    EIN 061566137 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  53. The Selander Foundation

    EIN 202024998 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2023 · Primary form: IRS Form 990-PF

  54. The Shanley Family Foundation

    EIN 061548816 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  55. The Sheldon and Marilyn Fireman Family Foundation

    EIN 208006985 · Headquarters: Greenwich, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  56. The Silverbird 29 Fund

    EIN 822223488 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  57. The Sleepy Cat Farm Foundation

    EIN 477218234 · Headquarters: GREENWICH, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  58. The Sonja Foundation

    EIN 137371356 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  59. The Sphinx Foundation Inc

    EIN 133798195 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2016 · Primary form: IRS Form 990-PF

  60. The Stanwich Club Incorporated

    EIN 060790586 · Headquarters: GREENWICH, CT, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  61. The Stanwich School Inc

    EIN 061506795 · Headquarters: GREENWICH, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  62. The Stephen & Suzanne Weiss Foundation I

    EIN 133384021 · Headquarters: GREENWICH, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  63. The Stephen - Sandra Waters Foundation

    EIN 222642703 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2018 · Primary form: IRS Form 990-PF

  64. The Stephen W Craig Family FoundationInc

    EIN 454092966 · Headquarters: Greenwich, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  65. The Stuart Foundation Inc

    EIN 136066191 · Headquarters: GREENWICH, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  66. The Sunny Ridge Foundation

    EIN 201465689 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2014 · Primary form: IRS Form 990-EZ

  67. The Susan and Eliot Black Foundation

    EIN 134085055 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  68. The Sweet Blue Foundation Inc

    EIN 994501549 · Headquarters: GREENWICH, CT, USA · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  69. The Thomas Meloy Foundation

    EIN 521116447 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2017 · Primary form: IRS Form 990-PF

  70. The Tom & Linda Petrone Foundation Inc

    EIN 993569493 · Headquarters: Greenwich, CT, US · Medical Research · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  71. The Tranfo Family Foundation Inc

    EIN 651080569 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2019 · Primary form: IRS Form 990-PF

  72. The Triumph Fund Inc

    EIN 992262884 · Headquarters: Greenwich, CT, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  73. The Uhnw Institute

    EIN 833703748 · Headquarters: GREENWICH, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  74. The United States Pony Clubs Inc

    EIN 066113480 · Headquarters: Greenwich, CT, US · Recreation & Sports · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  75. The Urfirer Family Foundation

    EIN 206846731 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  76. The Vazomica Foundation Inc

    EIN 061533063 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  77. The Vijaya Foundation

    EIN 421722869 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  78. The Vik Brothers Foundation

    EIN 396102416 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2010 · Primary form: IRS Form 990-PF

  79. The Walkabout Foundation Inc

    EIN 371582823 · Headquarters: GREENWICH, CT, USA · Medical Research · Latest available filing year: 2025 · Primary form: IRS Form 990

  80. The Walter and Monica Noel Family Foundation Inc

    EIN 066491314 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  81. The Warren Foundation Inc

    EIN 061467469 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  82. The Whitby School Incorporated

    EIN 060732917 · Headquarters: GREENWICH, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  83. The Wolverine Foundation

    EIN 510394484 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  84. The Womans Club of Greenwich Inc

    EIN 060679087 · Headquarters: GREENWICH, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  85. The Wright Foundation Inc

    EIN 134141287 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  86. The Yukon Fund Inc

    EIN 204767814 · Headquarters: Greenwich, CT, USA · Animal Related · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  87. The Zoom Foundation

    EIN 061600601 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  88. Third Wave Television Inc

    EIN 061488724 · Headquarters: Greenwich, CT, US · Arts, Culture & Humanities · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  89. Toastmasters International

    EIN 901139734 · Headquarters: Greenwich, CT, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  90. Town Hall Annex Corporation C/o Housing Authority Town of Greenwich

    EIN 061056557 · Headquarters: GREENWICH, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  91. Trustees of the Convent of the Sacred Heart

    EIN 352425019 · Headquarters: GREENWICH, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-T

  92. Turnbull Family Foundation Inc

    EIN 831563331 · Headquarters: Greenwich, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2023 · Primary form: IRS Form 990-PF

  93. Uja Federation of Greenwich Inc

    EIN 066068624 · Headquarters: GREENWICH, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  94. United States Junior Chamber of Commerce

    EIN 061475912 · Headquarters: GREENWICH, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  95. United States Power Squadrons

    EIN 066048044 · Headquarters: GREENWICH, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  96. United Way of Greenwich Inc

    EIN 060646578 · Headquarters: GREENWICH, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  97. Us-kosovo Foundation

    EIN 311604292 · Headquarters: GREENWICH, CT, USA · International, Foreign Affairs & National Security · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  98. Utilize Senior Energy Inc of Greeenwich Connecticut

    EIN 060972445 · Headquarters: Greenwich, CT, US · Public & Societal Benefit · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  99. Vianda Playter Williams Foundation Inc

    EIN 066107864 · Headquarters: GREENWICH, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  100. Voda Foundation

    EIN 815224093 · Headquarters: Greenwich, CT, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

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