- Courtyard by Marriott, Chester
- Courtyard by Marriott, Harrisonburg
- Courtyard by Marriott, Norfolk
- Courtyard by Marriott, Yorktown
- Cowan and Owen, PC Attorneys at Law
- Cox Radio, Inc.
- CPOR, Inc.
- Crestline Hotels and Resorts
- Crossroads Inn
- CTAM
- Culpepper Garden
- Cummins Atlantic, Inc.
- Cushing Manufacturing Co
- Customer One Mortgage
- Cvent.com
- D C Invitational
- D. K. Shifflet and Associates, LTD
- Dallas Convention and Visitors Bureau
- Daniel Corporation
- Danzas AEI Intercontinental
- Data Control, LLC
- Dean Foods
- DECA
- Decision Engineering Group
- Defense Leadership and Management Program Office
- Defense Orientation Conference Association
- Defense Supply Center Richmond
- Degesch America, Inc.
- Degnon Associates
- Deloitte and Touche, LLP
- Delta Dental Plan of Virginia
- Delta Epsilon Chi
- Department of Defense Education Activity
- Department of State
- Department of the Interior Minerals Mgmt Service
- Department of the Navy
- Destinations Showcase
- Dickenson Community Hospital
- Disaster Recovery Institute International
- Dominion
- Dominion Partners, L.C.
- Dominion Virginia Power
- Donate Life America
- Donate Life DC
- Donate Life Virginia
- Doubletree Hotel Norfolk, Norfolk VA
- Doug Viehland
- Douglas Publications
- Draper Arden Associates
- Drohan Management Group