| Robonation Inc. | | $8.7M |
| Roccomar, Inc. | Falls Church | $10M |
| Rock Creek Publishing Group Inc. | | $16M |
| Rogerco, Inc. | Reston | $17M |
| Rogue Signal Processing Corp | Sterling | $38M |
| Roh Inc | | $9.8M |
| Rolling Road Associates | | $9.9M |
| Romem Aqua Systems Co Inc | Woodbridge | $40M |
| Rooftop of Virginia Cap | | $12M |
| Roy Group International LLC | Great Falls | $11M |
| RP Professional Services, LLC | Ashburn | $80M |
| Rpi Group, Inc. | Fredericksburg | $16M |
| Rudy Coyner & Associates PLLC | Chester | $9.1M |
| Rumik Consultancy LLC | Fairfax | $9.4M |
| S C & a Inc | Arlington | $132M |
| S. B. Ballard Construction Company | Virginia Beach | $101M |
| S. C. Jones Services, Inc. | Hampton | $22M |
| S3 Contracting LLC | Manassas | $18M |
| Sabel Systems Technology Solutions, LLC | Beavercreek | $379M |
| Safe America Media LLC | Alexandria | $143M |
| Safeco Inc | Norfolk | $8.6M |
| Sag Corporation | Annandale | $34M |
| Sage Communications, LLC | McLean | $11M |
| Sage Computing, Inc | | $18M |
| Saint George Consulting Inc. | | $21M |
| Salado Isolation Mining Contractors, LLC | Reston | $1.9B |
| Salient Crgt, Inc. | Fairfax | $2.8B |
| Salient Federal Solutions, Inc. | | $49M |
| Salient Federal-Sgis Inc | Fairfax | $125M |
| Sallyport Global Holdings Inc | | $701M |
| Salus Worldwide Solutions Corp. | Arlington | $754M |
| Samtek Inc | Aldie | $105M |
| Samyak Solutions, Inc. | Centreville | $38M |
| Sanametrix Inc | Arlington | $48M |
| Sancorp Consulting, LLC | Falls Church | $88M |
| Sanford Federal, Inc. | Stafford | $89M |
| Sapient Government Services, Inc. | Boston | $436M |
| Saratoga Medical Center, Inc. | Fairfax | $68M |
| Satsyil Corp | Herndon | $76M |
| Sava Workforce Solutions LLC | Herndon | $7.5M |
| Savan Group, LLC | Vienna | $47M |
| Savannah River Mission Completion, LLC | Aiken | $3.8B |
| Savi Solutions, Inc. | Reston | $10M |
| Savvee Inc. | Chantilly | $112M |
| Savvis Federal Systems Inc | Arlington | $8.7M |
| Saw Contracting, Inc. | Virginia Beach | $32M |
| Saw Eastern JV, LLC | Virginia Beach | $36M |
| Saw Greenland, LLC | Virginia BCH | $112M |
| Saw-Greenland JV II LLC | Virginia Beach | $22M |
| Saxman One, LLC | Manassas | $72M |
| SBD Alliant, LLC | | $24M |
| SBG Technology Solutions Inc | | $1.4M |
| Sbvcc | | $73M |
| Schafer Government Services, LLC | Arlington | $122M |
| School Board of the City of Norfolk | Norfolk | $14M |
| School Board of the City of Virginia Beach | Virginia Beach | $49M |
| Science & Technology Corporation | Hampton | $159M |
| Science Applications International Corporation | Reston | $493M |
| Science Applications International Corporation | Reston | $17B |
| Science Applications International Corporation | Reston | $226M |
| Science Applications International Corporation | Reston | $369M |
| Sciolex Corporation | Chantilly | $95M |
| Score Association | Herndon | $51M |
| Scott County Public Schools | Weber City | $8.6M |
| Scott County Telephone Cooperative | Gate City | $47M |
| Scout Space Inc | Reston | $10M |
| Scribedoc.com, Inc. | Stafford | $16M |
| SCS Integrated Support Solutions LLC | Winchester | $21M |
| SD Solutions LLC | Luray | $12M |
| SD Solutions LLC | Vienna | $27M |
| Sda Solutions LLC | Triangle | $17M |
| Seaborn Health Care Inc | | $14M |
| Seaward Marine Corporation | Norfolk | $13M |
| Seaward Marine Services, LLC | Norfolk | $145M |
| Secunetics Inc | Sterling | $21M |
| Securigence LLC | Leesburg | $564M |
| Securitas Seguridad Espana/Scis Ute | Herndon | $18M |
| Securitas Thailand - Scis JV | Herndon | $8.9M |
| Sedaro Corporation | Arlington | $10M |
| Sedna Digital Solutions, LLC | Manassas | $161M |
| Sedra LLC | Harrisonburg | $57M |
| Sedulous Consulting Services, LLC | Triangle | $17M |
| Segue Technologies, Inc | Arlington | $81M |
| Sehlke Consulting LLC | Vienna | $243M |
| Sekon Enterprise, LLC | Reston | $61M |
| Sellers & Associates, LLC | Chesapeake | $38M |
| Semanticbits LLC | Reston | $416M |
| Sensa Solutions, Inc. | Reston | $16M |
| Sentinel Group LLC | Quantico | $41M |
| Serco Inc | Herndon | $4.9B |
| Serco Inc. | | $67M |
| Serco-Ips Corporation | | $160M |
| Servicesource Inc | Oakton | $423M |
| Ses Space & Defense, Inc. | Reston | $228M |
| SEV1TECH, LLC | Woodbridge | $656M |
| Seva Technical Services, Inc. | | $8.6M |
| Sevatec LLC | | $208M |
| Seventh Sense, LLC | Woodbridge | $94M |
| Sewp Solutions LLC | Fairfax | $52M |
| SGC23 Joint Venture LLC | | $22M |
| Sgi Global LLC | Fairfax | $47M |
| Sgjv, LLC | Virginia Beach | $110M |
| SGJV2, LLC | Virginia Beach | $123M |
| Shelter House, Incorporated | Chantilly | $9.0M |
| Shenandoah Cable Television, LLC | | $17M |
| Shenandoah Fleet Maintenance and Management, LLC | | $8.6M |
| Shenandoah University | | $14M |
| Shenandoah Valley Regional Airport Commission | Weyers Cave | $9.1M |
| SHIFT5, Inc. | Arlington | $33M |
| Shore Watch Construction Services, LLC | Reston | $16M |
| Shorepoint LLC | Herndon | $38M |
| SHR Consulting Group LLC | Alexandria | $72M |
| SI2 LLC | Virginia Beach | $30M |
| Sicpa Securink Corp | Springfield | $164M |
| Sicuritalia - Securitas Critical Infrastructure Services Inc JV | | $39M |
| Sie Consulting Group LLC | Arlington | $28M |
| Siemens Government Technologies Inc | Reston | $584M |
| Sienna Systems Corp | Ashburn | $14M |
| SIERRA7, Inc. | McLean | $257M |
| Sigmacorps Solutions LLC | Stafford | $10M |
| Signature Choice Ii, LLC | Woodbridge | $303M |
| Signature Choice, LLC | Woodbridge | $146M |
| Sikich Cpa LLC | Alexandria | $110M |
| Sikich Federal Inc. | Arlington | $188M |
| Silosmashers, Inc. | Alexandria | $79M |
| Simba Enterprises LLC | Leesburg | $28M |
| Simoncomputing, Inc. | Alexandria | $9.4M |
| Simventions Inc | Fredericksburg | $327M |
| Sincerus Global Solutions Inc. | Nokesville | $59M |
| SIX3 Advanced Systems Inc | | $7.8M |
| SJS Executives, LLC | Virginia Beach | $25M |
| Skeo Solutions, Inc | Charlottesville | $34M |
| Skies the Limit Academy LLC | Sterling | $8.6M |
| Sky Solutions LLC | Vienna | $132M |
| Skyepoint Decisions, Inc. | | $62M |
| Skyline Software Systems, Inc. | Herndon | $14M |
| Smithfield Packaged Meats Sales Corp. | Smithfield | $18M |
| SMS Data Products Group Inc | McLean | $422M |
| Smyth County Board of Supervisors | Marion | $10M |
| Sna International LLC | Alexandria | $168M |
| Snap, Inc | Chantilly | $72M |
| SNR Government IT Services LLC | Alexandria | $23M |
| Soc LLC | Chantilly | $150M |
| Social Impact Inc | Arlington | $45M |
| Social Services, Virginia Department of | Glen Allen | $10B |
| Sofie Co. | Dulles | $42M |
| Sofis-TRG LLC | | $7.6M |
| Soft Tech Consulting, Inc. | Chantilly | $184M |
| Softrams LLC | Arlington | $704M |
| Softthink Solutions, Inc. | Leesburg | $27M |
| Software AG Government Solutions, Inc. | | $2.6M |
| Software Consultants Inc | Reston | $29M |
| Soldierpoint Digital Health, LLC | Herndon | $527M |
| Sole Solutions Inc. | Front Royal | $23M |
| Solerity Inc | Herndon | $20M |
| Solution Guidance Corporation | | $7.6M |
| Solutions BY Design Ii, LLC | Vienna | $62M |
| Solutions Development Corp | King George | $20M |
| Solutions for Information Design, Inc. | Fairfax Station | $23M |
| Solutions That Empower People, Inc. | Rocky Mount | $10M |
| SOLUTIONS71, LLC | Sterling | $46M |
| Solv LLC | MC Lean | $33M |
| Sonny Merryman, Inc | | $48M |
| Sos International LLC | Reston | $555M |
| Sourceamerica | Vienna | $160M |
| Southeast Rural Community Assistance Project, Inc. | Roanoke | $9.7M |
| Southeastern Computer Consultants, Inc. | King George | $187M |
| Southern Dominion Health | | $11M |
| Southern Virginia University | | $11M |
| Southland Industries | Dulles | $29M |
| Southpoint Consulting, Inc. | Alexandria | $43M |
| Southside Virginia Community College | | $29M |
| Southwest Virginia Community College | | $33M |
| Southwest Virginia Community Health | Saltville | $21M |
| SP Technologies, LLC | McLean | $55M |
| Sparc Research LLC | Warrenton | $40M |
| Sparksoft Corporation | | $39M |
| Spatial Integrated Systems Inc | | $11M |
| Spectrum COMM Inc. | Newport News | $17M |
| Spectrum Electrical Services, Inc | Herndon | $55M |
| Spider Strategies, Inc. | Arlington | $33M |
| Spin Systems Inc. | | $62M |
| Spinvi Consulting LLC | | $71M |
| Spire Global Subsidiary, Inc. | Vienna | $67M |
| SPN Solutions Inc | | $21M |
| Sprezzatura Management Consulting, LLC | Arlington | $295M |
| Sprezzatura-Governmentcio Joint Venture LLC | McLean | $37M |
| Spring Garden Apartments LLC | | $13M |
| Spry Methods, Inc. | McLean | $35M |
| SRM Group, LLC | Virginia Beach | $24M |
| SRS Grounds, LLC | Hampton | $21M |
| SSPC LLC | Vienna | $31M |
| ST. Charles Health Council, Inc. | | $25M |
| ST. Michael's Inc. | Woodbridge | $26M |
| Stafford Consulting Company, Inc. | MC Lean | $102M |
| Stafford County Public Schools | Stafford | $21M |
| Standard Calibrations Inc | Chesapeake | $42M |
| Standard Communications Inc | Hume | $32M |
| Standard Healthcare Services, Inc. | | $11M |
| Standard-Blazar, LLC | Fairfax | $249M |
| Stantec GS - AECOM Atlantic Joint Venture | Charlottesville | $20M |
| Stantec GS - WSP JV | Charlottesville | $43M |
| Stantec GS Inc. | Charlottesville | $38M |
| Starkist Co | Reston | $7.4M |
| State Corporation Commission | Richmond | $1.6B |
| State Council of Higher Education for Virginia | | $11M |
| Staunton Redevelopment and Housing Authority | | $11M |
| Stealth Solutions Inc | Sterling | $22M |
| Steampunk, Inc. | MC Lean | $648M |
| Stella JV, LLC | Reston | $49M |
| Steps, Inc. | | $15M |
| STG International, Inc. | Arlington | $611M |
| STG LLC | | $36M |
| Storage Strategies Inc | Manassas Park | $9.4M |
| Stratascor, LLC | Virginia Beach | $171M |
| Strategic Aci Inc. | Warrenton | $42M |
| Strategic Airborne Operations JV, LLC | Newport News | $39M |
| Strategic Alliance Business Group LLC | Fairfax | $93M |
| Strategic Alliance Solutions LLC | Fairfax | $243M |
| Strategic Analysis, Inc. | Arlington | $457M |
| Strategic Capacity Group, Inc | MC Lean | $26M |
| Strategic Insight, LTD. | Arlington | $35M |
| Strategic Operational Solutions Inc | Ashburn | $69M |
| Strategic Resources, Incorporated | Vienna | $146M |
| Strategy Consulting Team, LLC | Fairfax | $46M |
| Strateion Group, LLC | Ashburn | $12M |
| Strayer University, LLC | | $585M |
| Strongbridge LLC | Sterling | $116M |
| Structural Engineering Group Inc | Hamilton | $87M |
| STS International, Incorporated | Arlington | $201M |
| Stuart Garden Apartments Inc | | $7.8M |
| Stuart Garden Associates Phase II | | $9.4M |
| Suffolk Redvelopment Housing Authority | Suffolk | $69M |
| Summer Consultants, Inc. | McLean | $64M |
| Summit Helicopters Inc | Salem | $10M |
| Summit Technologies & Solutions Inc | | $13M |
| SUMMIT2SEA Consulting, LLC | | $24M |
| Sunberry Cleantech LLC | Fairfax | $13M |
| Sunstone Technical Solutions, LLC | Virginia Beach | $39M |
| Suntiva LLC | Tysons | $70M |
| Superior Government Solutions LLC | Falls Church | $8.9M |
| Supplysource DC, LLC | Alexandria | $22M |
| Supportworks Housing | Richmond | $25M |
| Supreme Solutions, Inc | Alexandria | $33M |
| Sustainable System Solutions LLC | Herndon | $113M |
| Suvi Global Services LLC | Herndon | $91M |
| Swanson Services LLC | Richmond | $8.8M |
| Swish Data Corporation | MC Lean | $410M |
| Symplicity Corporation | | $11M |
| Syncon LLC | Chesapeake | $78M |
| Synectics for Management Decisions, Inc. | Arlington | $45M |
| Syneren Technologies Corporation | Arlington | $54M |
| Synergist JV LLC | MC Lean | $58M |
| Synergy Business Innovation & Solutions Inc. | Reston | $479M |
| Syntek Technologies, Inc. | Fairfax | $12M |
| Sysco Hampton Roads, Inc | Suffolk | $256M |
| Sysnet Technologies, Inc. | Oakton | $65M |
| Sysorex Government Services, Inc. | Herndon | $40M |
| Systalex Corporation | Ashburn | $48M |
| System High Corporation | Chantilly | $342M |
| Systematic Inc. | Centreville | $26M |
| Systems Engineering Inc | Sterling | $13M |
| Systems Enginuity, Inc. | Manassas | $11M |
| Systems Intelligence, LLC | Herndon | $66M |
| Systems Planning and Analysis - Envisioneering, LLC | Alexandria | $15M |
| Systems Planning and Analysis, Inc. | Alexandria | $1.2B |
| Systems Technology Forum, LTD. | Fredericksburg | $103M |
| T and T Consulting Services Inc. | Falls Church | $133M |
| T-Mobile Secure Federal Operations LLC | Herndon | $121M |
| T-Solutions, Inc. | Chesapeake | $187M |
| T. A. Consulting, Inc. | Virginia Beach | $18M |
| T. White Parker Associates, Incorporated | Reston | $8.6M |
| Tabet Manufacturing Company, Inc. | Norfolk | $15M |
| Tactical & Survival Specialties, LLC | Harrisonburg | $131M |
| Talatek, LLC | | $8.1M |
| Talon East Fuel Services LLC | | $11M |
| Talon Veteran Services Incorporated | | $12M |
| Talton Marine Terminal, LLC | Leesburg | $63M |
| Talu LLC | Herndon | $49M |
| Targeted Approach LLC | Alexandria | $19M |
| Tate, Incorporated | Alexandria | $63M |
| Tazewell-Bgi JV, LLC | Norfolk | $6.4M |
| TBP&JJ Worldwide Services LLC | Leesburg | $78M |
| TCS Alpha Security LLC | Richmond | $13M |
| Team Carney, Inc. | Alexandria | $52M |
| Team Greenzone JV LLC | | $90M |
| Team Placement Service Inc | Alexandria | $13M |
| Tec Solutions LLC | Arlington | $15M |
| Tech Systems Inc | Alexandria | $94M |
| TECH62 Inc | Fairfax | $12M |
| Techanax LLC | Woodbridge | $80M |
| Techlaw Consultants Inc | Chantilly | $42M |
| Technatomy Corporation | Fairfax | $158M |
| Technica Corporation | Sterling | $49M |
| Technical and Project Engineering, LLC | Alexandria | $34M |
| Technical Assent, LLC | Arlington | $23M |
| Technical Data Analysis, Inc. | Falls Church | $28M |
| Technical Systems Integration, Inc. | Williamsburg | $21M |
| Technik Inc | Herndon | $29M |
| Technogen Inc. | Chantilly | $38M |
| Technologent Solutions, LLC | Chantilly | $54M |
| Technologist Inc. | Reston | $17M |
| Technology & Business Management Inc. | Haymarket | $26M |
| Technology Service Corp | Arlington | $575M |
| Technology Solutions Provider, LLC | Reston | $194M |
| Technology Trends Group, LLC | Arlington | $81M |
| Technology, Automation & Management, Inc. | Fairfax | $40M |
| Technomics Inc | Arlington | $169M |
| Technoserve, Inc. | Arlington | $47M |
| Techop Solutions International, Inc. | Stafford | $61M |
| Techpride-Jpi JV, LLC | Blacksburg | $10M |
| Techpride, Inc. | Blacksburg | $14M |
| Techtrend, Inc. | Fairfax | $42M |
| Tecnico Corporation | Chesapeake | $80M |
| Tek Fusion Global Inc. | Williamsburg | $15M |
| Teksynap Corporation | Reston | $553M |
| Tele-Consultants, Inc. | | $20M |
| Telecom International LLC | Basye | $11M |
| Telemus Group LLC | MC Lean | $12M |
| Telos Corporation | Ashburn | $112M |
| Tenacious Solutions LLC | Arlington | $24M |
| Tenica and Associates LLC | Chantilly | $36M |
| Terex Corporation | Fredericksburg | $5.3M |
| Terra Site Constructors LLC | Front Royal | $139M |
| Terrestris, LLC | Dumfries | $151M |
| Tesla Laboratories Inc. | Arlington | $32M |
| Tetra Tech Es, Inc. | Arlington | $278M |
| Tetra Tech Inc | | $23M |
| Tetra Tech, Inc. | | $11M |
| Thales Usa, Inc. | Arlington | $15M |
| The Acuna Corporation | Fairfax Station | $9.6M |
| The American Association of Motor Vehicle Administrators | Arlington | $38M |
| The American Public Power Association | Arlington | $19M |
| The Association of State and Territorial Health Officials | Arlington | $254M |
| The Bionetics Corp | Yorktown | $112M |
| The Bowen Consulting Group, Inc. | Chantilly | $91M |
| The Brite Group, Inc | Leesburg | $11M |
| The Building People LLC | Leesburg | $291M |
| The Campagna Center Inc | Alexandria | $12M |
| The Center for Regional Economic Competitiveness | Arlington | $11M |
| The Children's Center | | $39M |
| The Cna Corporation | Arlington | $451M |
| The Cogar Group, LTD. | Aldie | $62M |
| The College of William and Mary in Virginia (the University) | | $13M |
| The Columbia Group Inc | Alexandria | $26M |
| The Compass PTS JV | Arlington | $177M |
| The Craddock Group, LLC | Arlington | $48M |
| The Daston Corporation | Leesburg | $60M |
| The Durbin Group LLC | Fredericksburg | $8.4M |
| The Efficiency Group LLC | Arlington | $9.1M |
| The Entwistle Company LLC | Danville | $9.0M |
| The Gemini 3 Group, Inc. | Stafford | $17M |
| The Global Connective Center LLC | Alexandria | $9.0M |
| The Green Technology Group, LLC | Fairfax Station | $7.2M |
| The Hiller Companies LLC | | $12M |