- Direct Selling Association
- Distilled Spirits Council of the United States
- District of Columbia Area Health Education Center
- District of Columbia Primary Care Association
- Donohoe Companies Inc.
- Driscoll Communications
- DSCC
- EADS
- Edison Electric Institute
- Embassy Suites, Chevy Chase Pavilion, Washington, DC
- Employee Relocation Council
- Employers Council on Flexible Compensations
- Employment and Training Admin. Dolabor
- Environmental Industry Association
- eResources
- Ernstthal and Associates
- Eye Bank Association of America
- FAA, ASD-420
- Fairmont Washington, D.C., Georgetown
- Federal Emergency Management Agency
- Food Industry Association Executives
- Forum of Regional Association of Grantmakers
- Four Seasons Hotel Washington
- Friends of Nursing Research
- Fulbright Association
- Futures Industry Association
- George Washington University Hospital
- Georgetown Inn, Washington DC
- GEP Washington
- Gerontological Society of America
- Giuffrida Associates, Inc.
- Greater Milwaukee Convention and Visitors Bureau, Inc.
- Greater Phoenix Convention and Visitors Bureau
- Grocery Manufacturers of America
- H. John Heinz III Center for Science, Economics and the Environment
- Hamilton Crowne Plaza Hotel
- Hega Construction Company
- Hillel
- Hilton Washington Embassy Row, Washington DC
- Hilton Washington, DC
- Hogan and Hartson LLP
- Holiday Inn Capitol
- Holiday Inn Georgetown
- Holiday Inn on the Hill, Washington, D.C.
- Hosts Destination Services
- Howard University
- Howard University Hospital
- Howard University School of Business
- Howard University, Physicians Assistant Department
- HRSA Team