| Jacobs Engineering Group, Inc. | Greenville | SC | Subcontractor |
| Jacobson-westergard & Associates, Inc. | Estherville | IA | $0 |
| Jacobs Project Management Co.Orlando, FL · UEI NAV1FM1NQ8B6 | Orlando | FL | Subcontractor |
| Jacobs Project Management Co.Saint Louis, MO · UEI DMWVWGKL9YR6 | Saint Louis | MO | $0 |
| Jacobs Project Management Co.Irvine, CA · UEI Z7F6WN4CB8U9 | Irvine | CA | $0 |
| Jacobs-wsp-ame JV | Arlington | VA | Subcontractor |
| J & A Engineering, LLC | Marietta | GA | $0 |
| James Johnston & Associates, Inc. | Dallas | TX | $0 |
| James Llinas | Buffalo | NY | Subcontractor |
| James Posey Associates, Inc. | Owings Mills | MD | Subcontractor |
| James R. Moden, Inc. | Richmond | RI | $0 |
| James Seward Consultants, LLC | Merritt Island | FL | Subcontractor |
| Janson Group LLC | Bristow | VA | $0 |
| Janus Communications | Irvine | CA | Subcontractor |
| Janus Marine And Defense, Inc. | Swansboro | NC | Subcontractor |
| Jaros Baum & Bolles Consulting Engineers, LLP | New York | NY | Subcontractor |
| Jaros, Baum & Bolles, Inc. | New York | NY | Subcontractor |
| Jarpe Data Solutions | Prescott Valley | AZ | $0 |
| J A Sewell & Associates | Newport | WA | $0 |
| Javelin Technology Group, LLC | Kensington | MD | Subcontractor |
| J.b.a. Consulting Engineers, Inc. | Las Vegas | NV | $0 |
| JC3 Global, Inc. | California | MD | Subcontractor |
| JDH Corrosion Consultants, Inc. | Concord | CA | Subcontractor |
| Jeff Hendrix | Reston | VA | Subcontractor |
| Je Fuller/hydrology And Geomorphology, Inc. | Tempe | AZ | Subcontractor |
| Je Good Consulting Engineers LLC | Glen Rock | PA | Subcontractor |
| Jenike & Johanson Inc. | Tyngsboro | MA | $0 |
| Jenkins Management Support Services, LLC | Chesapeake | VA | Subcontractor |
| Jennifer Lewis | Houston | TX | Subcontractor |
| Jensen Design & Survey, Inc. | Ventura | CA | Subcontractor |
| Jeo Consulting Group Inc. | Wahoo | NE | Subcontractor |
| Jerico Technologies LLC | Fredericksburg | VA | Subcontractor |
| Jernstrom Engineering, LLC | Anchorage | AK | Subcontractor |
| Jetseal Engineering And Technical Services, L.L.C. | Rexburg | ID | Subcontractor |
| J. E. Ward Enterprises LLC | Nokesville | VA | Subcontractor |
| JMC Rota Inc. | Carlsbad | CA | Subcontractor |
| J. M. Grimstad, Inc. | Muskego | WI | Subcontractor |
| J-M Matkin & Associates, Ltd. | Boerne | TX | Subcontractor |
| J M Smith Engineering, LLC | Cornelia | GA | $0 |
| JMT Of New York, Inc. | Cockeysville | MD | Subcontractor |
| Jocelyn Smith Berge | Edmonds | WA | $0 |
| Joecel Engineering And Consulting, LLC | Colesville | MD | Subcontractor |
| John C. Daidola, Inc. | Northport | NY | $0 |
| John D Hynes & Associates Inc. | Salisbury | MD | Subcontractor |
| Johns And Bhatia, Engineering Consultants, Ltd. | Rockville | MD | Subcontractor |
| Johnson Patricia Diane | Yuma | AZ | $0 |
| Johnson, Spellman & Associates, Inc. | Peachtree Corners | GA | $0 |
| Jomega, LLC | Dayton | OH | Subcontractor |
| Joseph M. Lyvers | Pasadena | CA | Subcontractor |
| Journey Technical Solutions, Inc. | Fairfax | VA | Subcontractor |
| Jovian Concepts, LLC | Hanover | MD | Subcontractor |
| JPCL Engineering LLC | Hillsborough | NJ | Subcontractor |
| JPH Consulting, LLC | Leesburg | VA | Subcontractor |
| JPJ Engineering, Inc. | Hibbing | MN | $0 |
| Jp Technical Consulting Inc. | Norristown | PA | $0 |
| JSD Professional Services Inc. | Verona | WI | Subcontractor |
| J. S. Mcclure & Associates, LLC | Fairhope | AL | $0 |
| J.t. Blankinship, Inc. | Murphysboro | IL | $0 |
| J-u-b Engineers Inc. | Meridian | ID | Subcontractor |
| Jude Aerodynamics LLC | Kailua | HI | Subcontractor |
| Julien Engineering & Consulting, Inc. | New Orleans | LA | $0 |
| J. Uno & Associates, Inc. | Honolulu | HI | Subcontractor |
| Jupiter Signals LLC | Jupiter | FL | Subcontractor |
| Jviation, A Woolpert Company, LLC | Glendale | CO | Subcontractor |
| J.V. Poplawski & Associates, LLC | Bethlehem | PA | $0 |
| Kabbes Engineering Inc. | Barrington | IL | Subcontractor |
| Kadlec Associates, Inc. | Traverse City | MI | Subcontractor |
| K & A Engineering Consulting PC | White Plains | NY | Subcontractor |
| Kai Solutions Inc. | Marlton | NJ | Subcontractor |
| Kambiz Farahmand | West Fargo | ND | $0 |
| Kamtech Solutions LLC | Shrewsbury | NJ | Subcontractor |
| Kapur & Associates, Inc. | Milwaukee | WI | Subcontractor |
| Kardia Data Solutions LLC | Virginia Beach | VA | Subcontractor |
| Karmel Technical Services LLC | Hertford | NC | Subcontractor |
| Karvakko Engineering, Inc. | Bemidji | MN | $0 |
| Kaskaskia-terracon JV | Belleville | IL | Subcontractor |
| Katin Engineering Consulting | Antioch | CA | $0 |
| K&a US, Inc. | Denver | CO | Subcontractor |
| Kaylatek, Inc. | Fairfax | VA | Subcontractor |
| Kbmat Advisors LLC | Issaquah | WA | Subcontractor |
| KBM Enterprises, Inc. | Huntsville | AL | Subcontractor |
| KBR Wyle Services, LLCEl Paso, TX · UEI DXU5KP7A3651 | El Paso | TX | Subcontractor |
| KBR Wyle Services, LLCNorth Charleston, SC · UEI EN16JU5FMJC3 | North Charleston | SC | $0 |
| KBR Wyle Services, LLCWarner Robins, GA · UEI FGMTFH5SLZW6 | Warner Robins | GA | Subcontractor |
| KBR Wyle Services, LLCClearfield, UT · UEI G59NFMSCQ9C3 | Clearfield | UT | Subcontractor |
| KBR Wyle Services, LLCDallas, TX · UEI J5FEUQGN2AS6 | Dallas | TX | $0 |
| KBR Wyle Services, LLCChambersburg, PA · UEI K64MMGPAN1B6 | Chambersburg | PA | Subcontractor |
| KBR Wyle Services, LLCColorado Springs, CO · UEI XG3DMJ6GVQ58 | Colorado Springs | CO | Subcontractor |
| K.c. Installation LLC | Harrisburg | NC | $0 |
| KCL Engineering LLC | West Des Moines | IA | Subcontractor |
| KCW Engineering Technologies, Inc. | Glen Burnie | MD | Subcontractor |
| KDM Security Solutions, Inc. | Lewisberry | PA | Subcontractor |
| Keast And Hood Co. | Philadelphia | PA | Subcontractor |
| Keck & Wood Inc. | Duluth | GA | $0 |
| Keith And Associates, Inc. | Pompano Beach | FL | Subcontractor |
| Keller Associates Inc. | Meridian | ID | $0 |
| Keller, Schleicher & Macwilliam Engineering And Testing, Inc. | Sebastian | FL | Subcontractor |
| Kellogg Brown & Root LLC | Houston | TX | $0 |
| Kelly Mcnutt Consulting LLC | Vancouver | WA | Subcontractor |
| Kelsey Structural Apc | La Mesa | CA | Subcontractor |
