GrantAuthority

Grantmaking foundations in Greenwich, CT

227 grantmaking foundations in Greenwich, Connecticut, ranked by recent giving reported to the IRS (about $240M combined).

Top foundations by giving

  1. Halvorsen Family Foundation
    Greenwich, CT · Philanthropy, Voluntarism and Grantmaking Foundations
    $35M (2025)
  2. Zoom Foundation
    Greenwich, CT · Philanthropy, Voluntarism and Grantmaking Foundations
    $30M (2025)
  3. Sage Foundation Inc
    Greenwich, CT · Philanthropy, Voluntarism and Grantmaking Foundations
    $16M (2024)
  4. Bemc 4 Association
    Greenwich, CT · Philanthropy, Voluntarism and Grantmaking Foundations
    $15M (2022)
  5. Lone Pine Foundation Inc
    Greenwich, CT · Philanthropy, Voluntarism and Grantmaking Foundations
    $10M (2024)
  6. Rutledge Family Foundation
    Greenwich, CT · Philanthropy, Voluntarism and Grantmaking Foundations
    $7.6M (2025)
  7. Azcat Foundation
    Greenwich, CT · Philanthropy, Voluntarism and Grantmaking Foundations
    $6.6M (2025)
  8. The Greenwich Hospital Endowment Fund
    Greenwich, CT · Philanthropy, Voluntarism and Grantmaking Foundations
    $6.2M (2025)
  9. Royce Family Fund Inc
    Greenwich, CT
    $5.9M (2024)
  10. Selander Foundation
    Greenwich, CT · Philanthropy, Voluntarism and Grantmaking Foundations
    $5.1M (2024)
  11. The Common Sense Fund Inc
    Greenwich, CT
    $3.8M (2024)
  12. Alfa Foundation
    Greenwich, CT · Philanthropy, Voluntarism and Grantmaking Foundations
    $3.8M (2025)
  13. Mulberry Essence Foundation
    Greenwich, CT · Philanthropy, Voluntarism and Grantmaking Foundations
    $3.5M (2024)
  14. Michael and Carol Lowenstein Foundation Inc
    Greenwich, CT · Philanthropy, Voluntarism and Grantmaking Foundations
    $3.4M (2025)
  15. Metropoulos Family Foundation
    Greenwich, CT · Philanthropy, Voluntarism and Grantmaking Foundations
    $3.1M (2025)
  16. Uja Federation of Greenwich Inc
    Greenwich, CT · Environment
    $3M (2024)
  17. Elinor Patterson Baker Foundation
    Greenwich, CT
    $3M (2026)
  18. The Pasculano Foundation
    Greenwich, CT · Philanthropy, Voluntarism and Grantmaking Foundations
    $3M (2024)
  19. Viking Global Foundation Inc
    Greenwich, CT · Philanthropy, Voluntarism and Grantmaking Foundations
    $2.7M (2024)
  20. Loon Point Foundation
    Greenwich, CT · Philanthropy, Voluntarism and Grantmaking Foundations
    $2.5M (2024)
  21. Daftuar Family Foundation
    Greenwich, CT · Diseases, Disorders and Medical Disciplines
    $2.4M (2024)
  22. Wolverine Foundation
    Greenwich, CT · Philanthropy, Voluntarism and Grantmaking Foundations
    $2.3M (2025)
  23. Woodshouse Foundation
    Greenwich, CT
    $2.2M (2025)
  24. Indira Foundation
    Greenwich, CT · Philanthropy, Voluntarism and Grantmaking Foundations
    $2M (2025)
  25. Dellora a & Lester J Norris Foundation
    Greenwich, CT
    $2M (2025)

Showing the top 100 by giving. Search all 227 with a free account.

Find the right funders faster. Filter every foundation by location, cause, giving size and openness, and see full grantee histories, with a free GrantAuthority account.

Create free account

Causes in Connecticut