| Datalytica LLC | Laurel | MD | Subcontractor |
| Datarebels LLC | Richmond | VA | Subcontractor |
| Davettechs LLC | Sterling | VA | Subcontractor |
| David Mcinnis | Honeoye Falls | NY | Subcontractor |
| Dayweather, Inc. | Cheyenne | WY | Subcontractor |
| Deborah M. Brodsky LLC | Boulder | CO | $0 |
| Decisive Testing, Inc. | San Diego | CA | Subcontractor |
| Decons Energy, LLC | Jacksonville | FL | Subcontractor |
| Defense Trade Solutions LLC | Washington | DC | Subcontractor |
| Delitor Inc. | Holly Springs | NC | $0 |
| De Lorenzo, Lori | Blacksburg | VA | $0 |
| Development Analytics LLC | Washington | DC | Subcontractor |
| Develop Metrics LLC | Miami | FL | Subcontractor |
| Dewitt, Jamie | Corvallis | OR | $0 |
| Df Dickins Associates, LLC | Monterey | CA | $0 |
| Dg Services LLC | Leechburg | PA | Subcontractor |
| Dinetah LLC | Orlando | FL | $0 |
| Directed Energy Consulting LLC | Albuquerque | NM | Subcontractor |
| Direct Push Analytical Corp. | Saint Charles | IL | Subcontractor |
| District Scheduling Consultants, LLC | Derwood | MD | Subcontractor |
| Ditta Vittoria Giartosio | Roma | RM | $0 |
| DKG Consulting, Inc. | Bowie | MD | Subcontractor |
| Dma Health Strategies Inc. | Lexington | MA | Subcontractor |
| DMG Hvac, LLC | Orange | CA | Subcontractor |
| Doane Infrared Inc. | Lorain | OH | $0 |
| Donna Lloyd-kolkin | Williamsburg | VA | $0 |
| Donnelley Financial Solutions, Inc. | Lancaster | PA | $0 |
| Dowd, Brooke | Roanoke | VA | $0 |
| Driftline Technical, LLC | East Grand Rapids | MI | Subcontractor |
| Drouin Michelle A | Fishers | IN | $0 |
| Duluth Archaeology Center, L.L.C | Duluth | MN | $0 |
| E5 LLC | Washington | DC | $0 |
| Eagleview Industries, Inc. | Vicksburg | MS | $0 |
| Eap Alliance Incorporated | Columbia | SC | $0 |
| Earthcare Technologies, Inc. | Springfield | VA | $0 |
| Earth Data Northeast Inc. | Exton | PA | Subcontractor |
| Eastwest1025 Incorporated | Tampa | FL | Subcontractor |
| East - West Technical Services LLC | Vero Beach | FL | $0 |
| Echologics, LLC | Atlanta | GA | Subcontractor |
| Econoler USA Inc. | Easton | MD | Subcontractor |
| Eco-write LLC | Warriors Mark | PA | $0 |
| Edgewater Computer Systems Inc. | Ottawa | ON | Subcontractor |
| Ed Intersect LLC | Carrboro | NC | Subcontractor |
| Education & Consulting LLC | Phoenix | AZ | Subcontractor |
| Edward Adams Associates, Incorporated | Wixom | MI | $0 |
| Eetza Research Associates LLC | Reno | NV | $0 |
| Effective Edge Worldwide LLC | Sedalia | CO | $0 |
| Einstein Technologies, Inc. | Reston | VA | Subcontractor |
| Ekitabu, LLC | Providence | RI | Subcontractor |
| Eklund, Kathy | Mattapoisett | MA | $0 |
| Eleanor Leugers | Albany | OR | $0 |
| Electro-media Design Ltd. | Gaithersburg | MD | $0 |
| Electronic Warfare Professionals, LLC | Suffolk | VA | Subcontractor |
| Elite Simulations LLC | Oviedo | FL | Subcontractor |
| Elizabeth C Wesman | Camas | WA | $0 |
| Ella A Mcneece | Farmington Hills | MI | $0 |
| Emdee Technology, Inc. | Wesley Chapel | FL | Subcontractor |
| Empower Government Services LLC | Vienna | VA | Subcontractor |
| Encos, Inc. | Baton Rouge | LA | Subcontractor |
| Energy Chicago Office, US Dept Of | Lemont | IL | Subcontractor |
| Energy & Environmental Economics Inc. | Anaheim | CA | Subcontractor |
| Energy & Environmental Resources Group LLC | Wexford | PA | Subcontractor |
| Engineering Software & Network Services, Inc. | Manassas | VA | Subcontractor |
| Enterprise Software Consultants Incorporated | Woodbine | MD | Subcontractor |
| Equal Access International | Arlington | VA | Subcontractor |
| Erin Hassett | Bozeman | MT | $0 |
| Essential Hospitals Institute | Washington | DC | $0 |
| Essig Pr Inc. | Rincon | PR | Subcontractor |
| Ets Environmental Testing Services, Inc. | Houston | TX | $0 |
| Eva Lim | Sunnyvale | CA | $0 |
| Evergreen Rural Water Of Washington | Shelton | WA | Subcontractor |
| Ewr, Inc. | Collierville | TN | $0 |
| Excession Technical Services International LLC | Sterling | VA | Subcontractor |
| Experimentia Et Veritas (eev) Consulting LLC | Trafalgar | IN | Subcontractor |
| Extended Disc North America, Inc. | Magnolia | TX | $0 |
| Fail-safe Solutions LLC | Edmond | OK | Subcontractor |
| Fairweather LLC | Anchorage | AK | Subcontractor |
| Fairweather Science, LLC | Anchorage | AK | Subcontractor |
| Faro International LLC | Reno | NV | Subcontractor |
| Federal Technology Service Region 7 Professional Services | Fort Worth | TX | $0 |
| Feg Consulting, LLC | Blue Ash | OH | Subcontractor |
| Filtration Corporation Of America | Glen Ellyn | IL | Subcontractor |
| Findium LLC | Arlington | VA | Subcontractor |
| Fitforce Inc. | Salem | MA | $0 |
| Flight Clearance, Inc. | California | MD | Subcontractor |
| Flightscape Inc. | Irving | TX | $0 |
| Fondation Voir Et Entendre | Paris | | Subcontractor |
| Force99 Technologies LLC | Mount Pleasant | SC | Subcontractor |
| Force, Michael | Kelowna | BC | $0 |
| Force Technology Solutions LLC | Greenfield | IN | $0 |
| Ford Consulting Services LLC | Whitestown | IN | Subcontractor |
| Forensic Assurance Inc. | Northville | MI | $0 |
| Forward Thinking Innovations, LLC | The Villages | FL | Subcontractor |
| Fourpoint Education Partners, LLC | Bethesda | MD | Subcontractor |
| Francis E Kapsch Jr | Minneapolis | MN | $0 |
| Free Flow Technologies Limited | Machesney Park | IL | Subcontractor |
| Frontier Fire Protection, LLC | Eagle River | AK | Subcontractor |
| Front Range Research Associates, Inc. | Denver | CO | $0 |
| Fundacao Coordenacao De Projetos,pesquisas E Estudos Tecnologicos Coppetec | Rio De Janeiro | | $0 |
| Gabriella H Garcia | New York | NY | $0 |
