- ACCE
- Accelerate Brain Cancer Cure
- American Academy of Nursing
- American Horticultural Society
- American Institute of Medical and Biological Engineers
- Balfour Beatty Construction, Inc.
- Brand Resources Group
- Bureau of Engraving and Printing
- Burson-Marsteller
- Former DC2012 Coalition
- Gavin Carter and Associates
- Democracy Data Communications
- Entertainment Software Association
- Ethics Resource Center
- Fleishman-Hillard
- Foundation for Women's Cancer — formerly the Gynecologic Cancer Foundation
- GolinHarris
- Greater Washington Board of Trade
- Greater Washington Initiative
- Greater Washington Urban League
- Groundswell
- The Harbour Group
- Human Genome Sciences
- International Relief & Development
- Issue & Image
- Mandiant
- Marshfield Associates
- Mary's Center for Maternal and Child Care
- McMahon Squier Lapp & Associates
- Medtronic
- Meeting Masters, Inc.
- MINDlink Foundation
- Municipal Securities Rulemaking Board
- National Association of Clean Air Agencies
- National Council of Farmer Cooperatives
- National Federation of Independent Business
- Neighborhood Restaurant Group
- Pension Rights Center
- Pharmaceutical Care Management Association
- Podesta Group
- Point Blank PR
- Quinn Gillespie & Associates
- Rainmaker
- Ripple Communications
- RTCRM
- SNR Denton
- Society of Gynecologic Oncologists
- Travel Business Roundtable
- Verizon
- TheWadeGroup
- Women's Bar Association of the District of Columbia
- Yale Divinity School