| Alice International Inc. | Milford | NH | Subcontractor |
| Alidade Inc. | Newport | RI | $0 |
| Aligned Strategies Inc. | Baltimore | MD | Subcontractor |
| A-linc Inc. | Great Falls | VA | $0 |
| Al Jidara Investment Services Co. Limited Liability | Amman | | Subcontractor |
| Allen Premier Group LLC | Clifton Park | NY | Subcontractor |
| Allied Government Solutions, Inc. | Durham | NH | Subcontractor |
| All In Spanish, LLC | Tualatin | OR | $0 |
| Alphacat Consulting LLC | Alexandria | VA | Subcontractor |
| Alpha Dawn, LLC | Rockville | MD | Subcontractor |
| Altamirano Consulting Inc. | Fairfax | VA | Subcontractor |
| Alutiiq Management Nigeria Limited | Lagos | | Subcontractor |
| Am2 Prosol LLC | Alexandria | VA | Subcontractor |
| Amanda Preston Consulting LLC | Andover | MA | $0 |
| Amd Group LLC | Delafield | WI | $0 |
| Ameria, CJSC | Yerevan | | Subcontractor |
| American Health And Safety, LLC | Fairbanks | AK | Subcontractor |
| American Human Capital, LLC. | Plano | TX | $0 |
| Amico Consulting LLC | Orlando | FL | Subcontractor |
| Amps International, LLC | Port Saint Lucie | FL | $0 |
| Ams Planning & Research Corp. | Fairfield | CT | $0 |
| Amy C Edmondson | Cambridge | MA | $0 |
| Amy L Miller, PC | Roggen | CO | $0 |
| Analytic Imagination, LLC | White Plains | MD | Subcontractor |
| Anata Management Solutions, LLC | West Jordan | UT | $0 |
| Anchor Hill Solutions LLC | Odenton | MD | Subcontractor |
| Anchor Legacy Enterprise LLC | Lakeland | FL | $0 |
| Anchor Power Services, Inc. | Amarillo | TX | Subcontractor |
| Anderson Smith Consulting LLC | Atlanta | GA | Subcontractor |
| And One Technologies, LLC | Mountain View | CA | Subcontractor |
| Anita L Vichare | Evans | GA | $0 |
| Anne Teehan & Associates, LLC | Annapolis | MD | $0 |
| Antenna, Ltd. | Naha | | $0 |
| Anthro-tech, Inc. | Olympia | WA | Subcontractor |
| Antie's Services LLC | Odessa | TX | $0 |
| Antilles Consulting Group, LLC | St Thomas | VI | Subcontractor |
| Antoine Johnson LLC | Pennsauken | NJ | $0 |
| Apex Consulting Services Group Inc. | Vienna | VA | Subcontractor |
| Apex Systems, LLC | Glen Allen | VA | Subcontractor |
| A Place To Walk To LLC | Upper Marlboro | MD | Subcontractor |
| Applied Information Management Institute | Omaha | NE | $0 |
| Appsolut, L.L.C. | Great Falls | VA | Subcontractor |
| Aps Estimating Inc. | Albuquerque | NM | Subcontractor |
| Aptara, Inc. | Falls Church | VA | $0 |
| Aptelecom LLC | Naples | FL | Subcontractor |
| Aqua Backflow, Inc. | Elgin | IL | $0 |
| Aquila Federal Solutions LLC | Wilmington | NC | Subcontractor |
| Arara Blue Energy Group LLC | Springfield | VA | Subcontractor |
| Arbiter Inc. | Atlanta | GA | $0 |
| Arbitratior Ja Demarco | Kennett Square | PA | $0 |
| Arc Advisory Group Inc. | Dedham | MA | $0 |
| Arc Consulting US LLC | Lorton | VA | Subcontractor |
| Arctos LLC | Bozeman | MT | $0 |
| Arcus Consulting Group LLC | San Juan | PR | Subcontractor |
| Arena Technologies, LLC | Chantilly | VA | Subcontractor |
| Areya Services LLC | Jacksonville Beach | FL | Subcontractor |
| Aridell Associates LLC | Northborough | MA | Subcontractor |
| Arkenstone Technologies LLC | Coraopolis | PA | $0 |
| Arm Consulting LLC | Sterling | VA | Subcontractor |
| Artemis Connection Inc. | Mukilteo | WA | $0 |
| Artha IT LLC | Chantilly | VA | Subcontractor |
| Artim LLC | Oak Hill | VA | Subcontractor |
| Artisan Analytix LLC | Centreville | VA | Subcontractor |
| Ascension Global Solutions LLC | Amesbury | MA | Subcontractor |
| Asigma Capital Advisory Services Limited | Kampala | | Subcontractor |
| Aspis LLC | Kansas City | MO | Subcontractor |
| Asset Management Partnership LLC | Virginia Beach | VA | Subcontractor |
| Associated Veterans LLC - Quality Solutions. | Arlington | VA | $0 |
| Astramerit LLC | Katy | TX | $0 |
| Async Solutions LLC | Washington | DC | Subcontractor |
| Atb Consulting Inc. | Orchard Park | NY | Subcontractor |
| Atcs Services, Inc. | Herndon | VA | Subcontractor |
| A To B Creations Inc. | Powder Springs | GA | $0 |
| Aubrey Daniels International, Inc. | Atlanta | GA | $0 |
| Aurrera Health Group LLC | Sacramento | CA | Subcontractor |
| Automated Business Solutions LLC | Darnestown | MD | Subcontractor |
| Automation & Validation Solutions, LLC | Pottstown | PA | Subcontractor |
| Avallon LLC | Warrenton | VA | Subcontractor |
| Avansys Solutions LLC | Washington | DC | Subcontractor |
| Avenue One Consulting Group Inc. | Fayetteville | GA | Subcontractor |
| Aviation Management Associates, Inc. | Ashburn | VA | Subcontractor |
| Awr Lloyd India Private Limited | Mumbai | | Subcontractor |
| Axias (ga) LLC | Duluth | GA | Subcontractor |
| Axias Ny LLC | East Brunswick | NJ | Subcontractor |
| Axon River, LLC | Richmond | VA | Subcontractor |
| Azael LLC | Springfield | PA | Subcontractor |
| Aztech International, Inc. | Dana Point | CA | Subcontractor |
| Bacus & Associates LLC | Annapolis | MD | $0 |
| Bader Innovation Group, LLC | Mc Lean | VA | Subcontractor |
| Baileyworks, Inc. | Katy | TX | $0 |
| Bald Cypress Innovation, LLC | Pembroke | NC | Subcontractor |
| Bales Consulting Group, LLC | Wilmington | NC | $0 |
| Banner Consulting LLC | Mount Pleasant | SC | Subcontractor |
| Bannor Mensah Global Consulting, LLC | Richmond | VA | Subcontractor |
| Bap Advisory Group LLC | Virginia Beach | VA | Subcontractor |
| Bardwell Consulting Ltd. | Denver | CO | $0 |
| Bates Consulting LLC | Roswell | GA | Subcontractor |
| Bauman Consulting Group LLC | Loveland | OH | $0 |
| Baxter-solutions LLC | Colorado Springs | CO | Subcontractor |
| BCCP Consulting, LLC | Richmond | VA | Subcontractor |
