| Natural Knack, Inc. | Washington | IA | Subcontractor |
| Nauticus Robotics Holdings, Inc. | Webster | TX | Subcontractor |
| Navalimpianti U.S.A Inc. | Ft Lauderdale | FL | $0 |
| Navarro & Wright Consulting Engineers, Inc. | New Cumberland | PA | Subcontractor |
| Navpro Consulting LLC | Milwaukee | WI | Subcontractor |
| Navyasys LLC | Glen Allen | VA | $0 |
| Navy, United States Department Of ThePort Hueneme, CA · UEI RLTTG5SVD9E4 | Port Hueneme | CA | $0 |
| Navy, United States Department Of TheIndian Head, MD · UEI W4K5D3PJGVV6 | Indian Head | MD | Subcontractor |
| Nba Engineering, Inc. | San Francisco | CA | $0 |
| NCG Consulting Inc. | Upper Marlboro | MD | Subcontractor |
| Nc Macario & Associates Inc. | Tamuning | GU | Subcontractor |
| Nebraska Methodist College Of Nursing And Allied Health | Omaha | NE | $0 |
| Nederland Refrigeration Air Conditioning & Heating Corp. | Minot | ND | Subcontractor |
| Neel-schaffer, Inc. | Jackson | MS | Subcontractor |
| Nelson Acoustical Engineering, Inc. | Bella Vista | AR | $0 |
| Nelson Design Service Inc. | Willow Grove | PA | Subcontractor |
| Neomek Inc. | Batavia | IL | Subcontractor |
| Neometrix Technologies, Inc. | Lake Mary | FL | Subcontractor |
| Nest Builders, Inc. | Chicago | IL | Subcontractor |
| Netherland, Sewell & Associates, Inc. | Dallas | TX | $0 |
| Netwerx LLC | Marshallton | DE | Subcontractor |
| Network Security Pros LLC | Hanover | MD | Subcontractor |
| Newcomb & Boyd, LLP | Atlanta | GA | Subcontractor |
| Newcom Technologies Inc. | Des Moines | IA | $0 |
| New Cycle Engineering LLC | Manchester | CT | $0 |
| New England Rocket Development, LLC | Ellington | CT | Subcontractor |
| New Era Technologies LLC | Harvest | AL | Subcontractor |
| Newgrange Design, Inc. | Wakefield | MA | Subcontractor |
| New Horizon 5 Inc. | Huntsville | AL | Subcontractor |
| New Sky Design Group LLC | La Mesa | CA | Subcontractor |
| New Spring Engineering, LLC | Atlanta | GA | Subcontractor |
| Nextage, LLC | Glenwood | MD | Subcontractor |
| Nextlevel Performance Solutions, Inc. | Indialantic | FL | Subcontractor |
| Next State Systems LLC | Albuquerque | NM | Subcontractor |
| Neyer Tiseo & Hindo Ltd. | Northville | MI | Subcontractor |
| N-gen Solutions, LLC | Woodbridge | VA | Subcontractor |
| Ngi Inc. | Houston | TX | $0 |
| Nitsch Engineering, Inc. | Boston | MA | Subcontractor |
| Niwc Pacific San Diego Navy Erp | San Diego | CA | Subcontractor |
| NJVC, LLC | Lorton | VA | Subcontractor |
| Nne Enterprises, Inc. | Little Canada | MN | Subcontractor |
| Noble Consultants, Incorporated | Irvine | CA | $0 |
| Nobletech Solutions Inc. | Huntsville | AL | Subcontractor |
| Nobletek, LLC | Wooster | OH | Subcontractor |
| Noblis MSD, LLC | Virginia Beach | VA | Subcontractor |
| Nolan E. Hertel | Kyle | TX | $0 |
| N.o.m.e.s Co. Ltd. | Okinawa-shi | | Subcontractor |
| Noreast Marine Systems LLC | Fairhaven | MA | $0 |
| North American Water Technology, LLC | Aitkin | MN | Subcontractor |
| Northeast Energy Efficiency Solutions | Amherst | MA | $0 |
| Northeast Water Solutions Inc. | Exeter | RI | $0 |
| Northland Consulting Engineers. L.L.P. | Duluth | MN | $0 |
| Northpoint Services, LLC | Bryan | TX | Subcontractor |
| Northwest Corrosion Engineering, LLC | Arlington | WA | Subcontractor |
| Northwest Engineering Service Inc. | Beaverton | OR | Subcontractor |
| Northwest Hydraulic Consultants Inc.Tukwila, WA · UEI DCCLYAA4QYD5 | Tukwila | WA | Subcontractor |
| Northwest Hydraulic Consultants Inc.Sacramento, CA · UEI WNGUWFNEGM85 | Sacramento | CA | $0 |
| Northwest Hydraulic Consultants Inc.Pasadena, CA · UEI LGKGQ18SQHL8 | Pasadena | CA | Subcontractor |
| Northwest Water Systems, Inc. | Port Orchard | WA | $0 |
| Nova Geotechnical And Inspection Services - So Cal | Irvine | CA | Subcontractor |
| Novarei Solutions, LLC | Knoxville | TN | Subcontractor |
| Nova Solvers LLC | Torrance | CA | Subcontractor |
| Novatek Engineering Inc. | Chardon | OH | Subcontractor |
| Novel Geo Environmental, Inc. | Coraopolis | PA | $0 |
| Novus Technologies Corporation | Parsippany | NJ | $0 |
| N & P Engineering, Architecture And Land Surveying, PLLC | Melville | NY | $0 |
| Null Geodesic Alterations, LLC | Divide | CO | Subcontractor |
| Numesa LLC | Carlsbad | NM | Subcontractor |
| Nutec Design Associates Inc. | York | PA | Subcontractor |
| Nutting Engineers Of Florida Inc. | Boynton Beach | FL | Subcontractor |
| Nuvision Engineering, Inc. | Pittsburgh | PA | Subcontractor |
| NV5 Consultants, Inc. | Pittsburgh | PA | Subcontractor |
| NV5 Global, Inc. | Hollywood | FL | Subcontractor |
| NV5 Inc. | Hollywood | FL | Subcontractor |
| NV5, Inc. | San Diego | CA | Subcontractor |
| NV5 West, Inc. | Ventura | CA | Subcontractor |
| NXTLVL Cloud LLC | Rapid City | MI | Subcontractor |
| Oak Hill Marine Design LLC | Southwest Harbor | ME | $0 |
| Oak Leaf Engineering Corp. | Suisun City | CA | Subcontractor |
| Oak Leaf Solutions LLC | Leesburg | VA | Subcontractor |
| Oakleaf Technology Group, Inc. | Warriors Mark | PA | Subcontractor |
| Oak Ridge Technologies I LLC | Oak Ridge | TN | Subcontractor |
| Obal Technologies Group, Inc. | Manassas | VA | Subcontractor |
| Obelus Design Group | Lake Forest Park | WA | $0 |
| Observera, Inc. | Chantilly | VA | Subcontractor |
| O'bunco Engineering International Inc. | Federal Way | WA | Subcontractor |
| Ocean Data Technologies Inc. | Hyannis | MA | Subcontractor |
| Oceanetics, Inc. | Seaford | VA | $0 |
| Ocean Tech Services LLC | Marion | MA | Subcontractor |
| O'connell Robertson & Associates, Inc. | Austin | TX | $0 |
| O'day Consultants, Inc. | Carlsbad | CA | Subcontractor |
| O'donnell Consultants, Inc. | Bethel Park | PA | $0 |
| O'donnell & Naccarato, Inc. | Philadelphia | PA | $0 |
| Oei Inc. | Lincoln | NE | Subcontractor |
| Offset Systems Group, LLC | Huntsville | AL | $0 |
| Ohio Technology Clearinghouse Inc. | Huntsville | AL | Subcontractor |
| Okahara & Associates Inc. | Honolulu | HI | $0 |
| Olh Inc. | Columbia | SC | Subcontractor |
| Oliver Little Gipson Engineering Inc. | Tullahoma | TN | $0 |
| Olmm Consulting Engineers | San Francisco | CA | $0 |
