- Ada and Albert Wibel Foundation
- Bill and Melinda Gates Matching Gifts Program
- Bowen Family Foundation
- David & Lorna Gladstone Foundation
- Edelman Foundation
- Herb Block Foundation
- Helen Gifford Foundation
- LWH Family Foundation
- Matthew Korn and Cynthia Miller Family Foundation
- Michael S. and Eleanor A. Pinkert Foundation
- P & A Family Foundation
- Peter and Mary Levin Family Foundation
- Punaro Foundation
- Ralph E. and Alma W. Burnham Fund
- Render Family Foundation
- Schlossberg Family Fund
- Starfish Foundation of Fairfax, Inc.
- Van Metre Family Foundation
- Wolf Run Foundation
- Wolf Trap Foundationfor the Performing Arts
