- Staff and Organizational Development
- Staffing Solutions
- Stafford Hospital
- Standard Technology Inc.
- Staples
- Star 107.3 and Smooth Jazz 93.1
- State Fair of Virginia
- Stateside Associates
- Stewart Moving and Storage-Paul Arpin of Richmond
- StoneSprings Hospital Center
- Stop Child Abuse Now of Northern VA
- STR Software Company
- Strang-Hatcher Corp. T-A Ben Franklin Crafts
- Strange's Florist, Inc.
- Strategic Management Systems, Inc.
- Strategy Plus Consulting, Inc.
- Stratton Publishing and Marketing Inc
- Studio I
- STYLE Weekly
- Summit Square
- Sunnyside
- Sunrise Senior Living
- SunTrust Bank
- SunTrust Mortgage
- Susquehanna Technologies
- Sussex County Board of Supervisors
- Sweetwater Tavern, Centreville
- Sweetwater Tavern, Falls Church
- Sweetwater Tavern, Sterling
- SyCom Technologies
- Synergy Benefits, Inc.
- Synigent Technologies, Inc.
- System Planning Corporation
- T.C. Williams High School
- Tall Cedars of Lebanon
- Tanks, Trucks and Trailers, Inc.
- Target Short Pump
- Target Stores - Chester
- Target Stores - Colonial Heights
- Target Stores - Midlothian Turnpike
- Target Stores - West Broad
- Taxpayer Advocate Service-IRS
- TCA Consulting Group, Inc.
- Teachers of English to Speakers of Other Languages, Inc
- Teamware Group
- Tech Knowledge, Inc.
- Technology Sutdent Association
- Technology Team, Inc.
- Techriver
- Tecumseh Professional Associates, Inc.