The following individuals and organizations have provided generous support to the Archive at various times since our founding:
- The Arca Foundation
- Mary Reynolds Babcock Foundation
- Anne Bartley
- Bauman Foundation
- Benchmark Fund
- Benton Foundation
- Herb Block Foundation
- Boehm Foundation
- Carnegie Corporation of New York
- Cavallo Foundation
- Center for Global Partnership (Japan Foundation)
- Central European University
- Cold War International History Project [Woodrow Wilson International Center for Scholars]
- Compton Foundation
- Congressional Quarterly
- Cox Newspapers
- Crowell & Moring
- C.S. Fund
- Patrick and Anna M. Cudahy Fund
- Deer Creek Foundation
- Democracy Fund
- James G. Dinan
- Dow Jones & Company
- Mike Farrell and Shelly Fabares
- W.H. and Carol Ferry
- Field Foundation
- Ford Foundation
- Ford Foundation Program-Related Investment Division
- Freedom Forum (formerly the Gannett Foundation)
- Fund for Constitutional Government
- Fund for Friendship and Justice
- Fundación Ford (Santiago, Chile)
- Gannett, Inc.
- Gardner Grout Foundation
- Rachel Garst
- General Service Foundation
- German Marshall Fund of the United States
- George Gund Foundation
- Harmon Foundation
- Phoebe W. Haas Charitable Trust
- Agnese N. Haury
- William and Flora Hewlett Foundation
- Hickrill Foundation
- HKH Foundation
- Jenny Holzer
- Howrey & Simon
- Edgar N. James
- W. Alton Jones Foundation
- J. M. Kaplan Fund, Inc.
- Henry P. Kendall Foundation
- John S. and James L. Knight Foundation
- Kunstadter Family Foundation
- Trister, Ross, Schadler & Gold
- Dr. Helena Lewis
- John D. and Catherine T. MacArthur Foundation
- J. Roderick MacArthur Foundation
- Mayer Brown
- John Merck Fund
- Leo Model Foundation
- Morrison Foerster Foundation
- Ruth Mott Fund
- Stewart R. Mott Charitable Trust
- National Community Funds
- The New-Land Foundation
- New World Foundation
- New York Times Company Foundation
- Norman Foundation
- North Shore Unitarian Universalist Veatch Program
- Open Society Fund, Inc.
- Open Society Institute
- Ottinger Foundation
- Park Foundation
- Partnership for Democracy (formerly the Youth Project)
- Pennybacker Fund
- Piper & Marbury
- Philadelphia Foundation
- Ploughshares Fund
- Pro Bono Publico Foundation
- Proceso Magazine
- Prospect Hill Foundation
- Public Welfare Foundation
- Charles H. Revson Foundation
- Christopher Reynolds Foundation
- Rockefeller Associates
- Rockefeller Family Fund
- Rockefeller Foundation
- Ropes & Gray
- Rouhanna Family Fund
- Samuel Rubin Foundation
- Florence and John Schumann Foundation
- Janet Shenk
- Smith Richardson Foundation
- Bernard and Anne Spitzer Charitable Trust
- Swiss Federal Institute of Technology
- Philip M. Stern Family Fund
- Streisand Foundation
- Margery Tabankin
- Time, Inc.
- US-Japan Foundation
- Washington Post Company
- Weiss Foundation
- Wellspring Philanthropic Advisers
- WilmerHale
- Winston Foundation for World Peace
- Yomiuri Shimbun