| Aecom Technical Services, Inc.Raleigh, NC · UEI HVBAQSXAMBZ3 | Raleigh | NC | Subcontractor |
| Aecom Technical Services, Inc.Denver, CO · UEI Q4RNGK6BKBE1 | Denver | CO | Subcontractor |
| Aecom USA, Inc. | New Orleans | LA | $0 |
| Aegis Engineering, LLC | Edmonds | WA | Subcontractor |
| Aegis, Inc. | Columbia | MD | Subcontractor |
| Aei Systems, Inc. | Centennial | CO | $0 |
| Aepc Group, LLC | Santa Clarita | CA | Subcontractor |
| Aero Design LLC | Rosamond | CA | Subcontractor |
| Aeroeda Inc. | Saint Augustine | FL | Subcontractor |
| Aeromechanical Solutions LLC | Redmond | WA | Subcontractor |
| Aerosciences, Inc. | San Antonio | TX | Subcontractor |
| Aero Solutions, LLC | Broomfield | CO | $0 |
| Aerospace Innovations, LLC | Newport News | VA | Subcontractor |
| Aerospace Structural Research Corp. | Milford | CT | Subcontractor |
| Aerospace Technical Services, LLC | Torrance | CA | Subcontractor |
| Aero Systems Engineering, Inc. | Marietta | GA | Subcontractor |
| Aerotechnologies, Inc. | Yorktown | VA | Subcontractor |
| Aerotech Research (usa), Inc. | Norfolk | VA | $0 |
| Aeroturn LLC | Oxford | CT | Subcontractor |
| Aertron, Inc. | Bethesda | MD | Subcontractor |
| Aesco, Inc. | Huntington Beach | CA | Subcontractor |
| Ae Works Ltd. | Arlington | VA | $0 |
| A&f Engineers Inc. | Washington | DC | $0 |
| Affiliated Engineers Inc. | Madison | WI | Subcontractor |
| Affiliated Engineers NW, Inc. | Seattle | WA | Subcontractor |
| Affiliated Engineers W, Inc. | San Francisco | CA | $0 |
| Affordable Mantech Solutions LLC | Maineville | OH | Subcontractor |
| Afterburner Wind Tunnel Services LLC | King George | VA | Subcontractor |
| Afvet Solutions, LLC | Daniel Island | SC | Subcontractor |
| Agile Communications, Inc. | West Long Branch | NJ | Subcontractor |
| Agileedge Defense LLC | Ponte Vedra Beach | FL | Subcontractor |
| Agilis Engineering, Inc. | Palm Beach Gardens | FL | Subcontractor |
| Ahbl Inc. | Tacoma | WA | Subcontractor |
| Ahj Engineers PC | Boise | ID | $0 |
| Ahmed A Kamel | Los Angeles | CA | Subcontractor |
| Aidc USA, LLC | Chandler | AZ | Subcontractor |
| Aimone-martin Associates LLC | Lemitar | NM | $0 |
| Aircerts, LLC | Wichita | KS | Subcontractor |
| Airflow Sciences Corp. | Livonia | MI | Subcontractor |
| Airin Technologies Inc. | Chantilly | VA | Subcontractor |
| Airmech Company W.L.L | Riffa / Al Hajiyat | | $0 |
| Airspace Innovation LLC | Falls Church | VA | Subcontractor |
| Aithon Management, LLC | Friendswood | TX | Subcontractor |
| Aja Inc. | Huntsville | AL | Subcontractor |
| Aj Engineers, Inc. | Annandale | VA | Subcontractor |
| Ajosta LLC | Madison | AL | Subcontractor |
| Ajt Engineering Inc. | Cocoa | FL | Subcontractor |
| Akm Consulting Engineers | Irvine | CA | $0 |
| Alan Plummer And Associates, Inc. | Fort Worth | TX | $0 |
| Alan Winkley Naval Architectur | Bremerton | WA | $0 |
| Alaska Energy Engineering LLC | Juneau | AK | Subcontractor |
| Albert Kahn Associates Inc. | Detroit | MI | $0 |
| Alfred Benesch & Co. | Chicago | IL | $0 |
| Alfred Benesch & CompanyLincoln, NE · UEI HPK5KFJCVUS3 | Lincoln | NE | Subcontractor |
| Alfred Benesch & CompanyGreenwood Village, CO · UEI ZQJ3YUBMR2M5 | Greenwood Village | CO | Subcontractor |
| Algotek, Inc. | Bowie | MD | $0 |
| Alico Systems Inc. | San Diego | CA | Subcontractor |
| Allana Buick & Bers, Inc. | Palo Alto | CA | Subcontractor |
| All Domain Integration Inc. | Malibu | CA | Subcontractor |
| Allen & Company, Inc. | Lawndale | CA | Subcontractor |
| Allen Consulting Inc. | Norman | OK | $0 |
| Allen Energy Services, Inc. | Longview | TX | Subcontractor |
| Allen Engineering, Inc. | Cocoa Beach | FL | Subcontractor |
| Allerion Consulting Group, Inc. | Roseville | CA | Subcontractor |
| Allgeier, Martin And Associates, Inc. | Joplin | MO | $0 |
| Alliance Consulting, Inc. | Beaver | WV | Subcontractor |
| Alliance Consulting Services LLC | Millersville | MD | Subcontractor |
| Alliance Engineering Group, Inc. | Taylor | TX | Subcontractor |
| Alliance Geotechnical Group, Inc. | Dallas | TX | Subcontractor |
| Allied Corrosion Industries, Inc. | Marietta | GA | $0 |
| Allied Technical Services, LLC | Oxnard | CA | Subcontractor |
| Allied Technology Partners LLC | Fulton | MD | Subcontractor |
| Alloyed Inc. | Seattle | WA | Subcontractor |
| All Ship & Cargo Surveys, Ltd. | Kaneohe | HI | $0 |
| All South Consulting Engineers, LLC | Metairie | LA | Subcontractor |
| Allwest Testing & Engineering Inc. | Hayden | ID | Subcontractor |
| Allwest Testing & Engineering, Inc.Meridian, ID · UEI XEM1BUZYLME9 | Meridian | ID | Subcontractor |
| Allwest Testing & Engineering, Inc.Spokane Valley, WA · UEI XKRBZUEVEJ35 | Spokane Valley | WA | Subcontractor |
| Ally General Solutions LLC | Pearland | TX | $0 |
| Almontaser Technical Services | Amman | | Subcontractor |
| Alpha Commissioning Engineers, Inc. | Northbrook | IL | Subcontractor |
| Alpha Team Solutions, Inc. | Aldie | VA | Subcontractor |
| Alphawinds LLC | Fairfax | VA | Subcontractor |
| Alpine Allegheny, Inc. | Aspinwall | PA | Subcontractor |
| Alpine Swift, Inc. | San Diego | CA | $0 |
| Al-shrooq Company | Baghdad | | Subcontractor |
| Altaintel LLC | Westminster | MD | Subcontractor |
| Alta Planning + Design, Inc. | Portland | OR | Subcontractor |
| Alten Technology USA Inc. | Troy | MI | Subcontractor |
| Altrusion, LLC | Mount Vernon | WA | Subcontractor |
| Alt & Witzig Engineering Inc. | Carmel | IN | Subcontractor |
| Ambient Air Technologies, LLC | Fort Collins | CO | Subcontractor |
| Ambricor, Limited Liability Company | Severna Park | MD | Subcontractor |
| Amc Systems Inc. | Oklahoma City | OK | $0 |
| Ame Consulting Engineers PC | Charlotte | NC | Subcontractor |
| Amentum Environment & Energy, Inc. | Englewood | CO | Subcontractor |
| Amentum Government Services Holdings Sub LLC | Chantilly | VA | Subcontractor |
| Amentum Holdings LLC | Chantilly | VA | Subcontractor |
| Amentum Services, Inc. | Las Vegas | NV | $0 |
| Amentum Technology, Inc. | Colorado Springs | CO | Subcontractor |
