| Advaita Corporation | Whitmore Lake | MI | $0 |
| Advanced Engineering Solutions USA Inc. | Castle Rock | CO | Subcontractor |
| Advanced Materials Applications, LLC | Groveland | CA | $0 |
| Advanced Materials Consultants | Phoenixville | PA | Subcontractor |
| Advanced Photon Sciences LLC | Essex Junction | VT | $0 |
| Advensys, LLC | Scottsdale | AZ | $0 |
| Aeroacoustics And Flow Physics Technologies, Inc. | Urbana | IL | Subcontractor |
| Aero-mach Wilco LLC | Wichita | KS | $0 |
| Aeronautical Testing Service, Inc. | Arlington | WA | Subcontractor |
| Aeronetica LLC | Tulsa | OK | Subcontractor |
| Aerosoft Inc. | Blacksburg | VA | Subcontractor |
| Aerospace Corporation, The | Houston | TX | Subcontractor |
| Aerospace Research & Technology LLC | Springboro | OH | Subcontractor |
| Aerospace Testing Engineering & Certification, Inc. | Seattle | WA | Subcontractor |
| Aerosurvey, Inc. | Manhattan | KS | Subcontractor |
| Aesec Global Services Inc. | Washington | DC | $0 |
| Agena Bioscience, Inc. | San Diego | CA | $0 |
| Agencia Estatal Consejo Superior De Investigaciones Cientificas | Madrid | | Subcontractor |
| Ag Metrics Group, Inc. | San Luis Obispo | CA | $0 |
| Ail Research Inc. | Princeton | NJ | $0 |
| Aimetra, Inc. | San Mateo | CA | Subcontractor |
| Airborne Holdings Inc. | Midlothian | TX | Subcontractor |
| Air-quality Remote-sensing Consulting LLC | Madison | AL | Subcontractor |
| Ak Constructors LLC | Palmer | AK | Subcontractor |
| Alerje, Inc. | Kalamazoo | MI | $0 |
| Alfred-wegener-institut Helmholtz-zentrum Fur Polar- Und Meeresforschung | Bremerhaven | | Subcontractor |
| Algoritmo Sapiente, Lda | Arcozelo VNG | | Subcontractor |
| All Domain Strategic Services (adss), LLC | Las Vegas | NV | Subcontractor |
| Alliance For Multispecialty Research, L.L.C | Knoxville | TN | Subcontractor |
| Alpha-omega Power Technologies, Limited Co. | Albuquerque | NM | Subcontractor |
| Amentum Technology, Inc. | Colorado Springs | CO | Subcontractor |
| American Board Of Medical Specialties Research And Education Foundation | Chicago | IL | Subcontractor |
| American Center For Optics Manufacturing Inc. | Fairport | NY | Subcontractor |
| Amplus Corporation | Herndon | VA | Subcontractor |
| Amp Research, Inc. | Naples | FL | $0 |
| Anaflash Inc. | Sunnyvale | CA | $0 |
| Andromeda Tech, LLC | Dublin | OH | Subcontractor |
| Anvil Systems Group Incorporated | Lorton | VA | Subcontractor |
| Apecor Corp. | Oviedo | FL | Subcontractor |
| Apium Inc. | Glendale | CA | Subcontractor |
| Apium Swarm Robotics, Inc. | San Diego | CA | Subcontractor |
| Applied Research Associates Inc.Austin, TX · UEI GNWRLV2TC177 | Austin | TX | Subcontractor |
| Applied Research Associates Inc.Lafayette, CO · UEI WRAYX5JFJEL5 | Lafayette | CO | $0 |
| Applied Research Associates, Inc. | Huntsville | AL | Subcontractor |
| Applied Research LLC | Rockville | MD | $0 |
| Applied Science & Technology Research Organization Of America Corp. | Moline | IL | Subcontractor |
| Applied Technology, Inc. | Annapolis | MD | Subcontractor |
| Apptronik Inc. | Austin | TX | Subcontractor |
| Aquinas LLC | Berwyn | PA | $0 |
| Aravasc, Inc. | Sunnyvale | CA | Subcontractor |
| Arborjet Inc. | Woburn | MA | $0 |
| Arc Aerospace And Defense Systems LLC | El Paso | TX | Subcontractor |
| Arcast Inc. | Oxford | ME | Subcontractor |
| Ares Corp. | Mc Lean | VA | Subcontractor |
| Arete Associates, Inc. | Falls Church | VA | $0 |
| Arete Biosciences, Inc. | Carlsbad | CA | $0 |
| Arieca Inc. | Pittsburgh | PA | $0 |
| Ark Government Solutions Inc. | Torrance | CA | Subcontractor |
| Armand Aerospace, LLC | Miramar Beach | FL | Subcontractor |
| Armauer Hansen Research Institute | Addis Ababa | | Subcontractor |
| Armored Things Inc. | Sutton | MA | $0 |
| Army, United States Department Of TheFort Rucker, AL · UEI FERJCSLDL8K1 | Fort Rucker | AL | Subcontractor |
| Army, United States Department Of TheAberdeen Proving Ground, MD · UEI Q9E3GKM43TM9 | Aberdeen Proving Ground | MD | Subcontractor |
| Arquimea USA Inc. | Pasadena | CA | Subcontractor |
| Arrowpoint Engineering LLC | Niceville | FL | Subcontractor |
| Artann Laboratories Inc. | Ewing | NJ | $0 |
| Art Office Corp. | Hollywood | FL | Subcontractor |
| Ascension Engineering Group LLC | Colorado Springs | CO | Subcontractor |
| Asedasciences Inc. | North Potomac | MD | $0 |
| Askari Defense, Inc. | Atlanta | GA | Subcontractor |
| Assured Information Security Inc. | Catonsville | MD | Subcontractor |
| Astradian Technologies LLC | Albuquerque | NM | Subcontractor |
| Astraea Therapeutics LLC | Mountain View | CA | $0 |
| Astra Fortis LLC | San Marino | CA | Subcontractor |
| Astronetix LLC | Nokesville | VA | Subcontractor |
| Astrox Corp. | College Park | MD | Subcontractor |
| Ata Aerospace LLC | Rockville | MD | Subcontractor |
| Athens Demo Site LLC | Athens | TX | Subcontractor |
| Atratus Research LLC | Stevensville | MD | Subcontractor |
| Attentive Science LLC | Stilwell | KS | Subcontractor |
| Attogene Corporation | Austin | TX | $0 |
| Auckland Uniservices Limited | Auckland | | $0 |
| Augustine Consulting Inc. | Hamilton | NJ | Subcontractor |
| Ausley Engineering, LLC | Niceville | FL | Subcontractor |
| Automated Data Development Systems LLC | Gurley | AL | Subcontractor |
| Autonocomm LLC | Woodland | CA | Subcontractor |
| Autonomous Innovations, Inc. | Santa Fe | NM | $0 |
| Aventra Defense Systems, Inc. | Herndon | VA | Subcontractor |
| Aventusoft L.L.C | Boca Raton | FL | $0 |
| Avian Research And Conservation Institute, Inc. | Gainesville | FL | $0 |
| Avn Corporation | South Charleston | WV | Subcontractor |
| Awetomaton Ltd. | Beavercreek | OH | Subcontractor |
| Awtt, LLC | Silverthorne | CO | $0 |
| Axient LLC | Albuquerque | NM | Subcontractor |
| Axios Technologies, Inc. | Dulles | VA | Subcontractor |
| Axon Connected, LLC | Earlysville | VA | $0 |
| Ayers Group, LLC | Princeton | NJ | $0 |
| Badenoch LLC | Royal Oak | MI | Subcontractor |
| BAE Systems Information And Electronic Systems Integration Inc. | Arlington | VA | Subcontractor |
| Bagtech Solutions LLC | Sterling | VA | Subcontractor |
