| Manufacturing Consulting Concepts LLC | Layton | UT | Subcontractor |
| Maplecroft Net Limited | London | | $0 |
| Marc Strategic Solutions LLC | Ann Arbor | MI | Subcontractor |
| Marine Awareness Research And Educational Society Incorporated | San Juan | PR | $0 |
| Maritime Intelligence And Security Training, LLC | Severna Park | MD | Subcontractor |
| Maritime Planning Associates, Inc. | Middletown | RI | Subcontractor |
| Mark M Hankewycz | Middletown | MD | Subcontractor |
| Marquez Stephen E | Billings | MT | $0 |
| Martin Jr Angel | Spring Hill | FL | $0 |
| Martorano Consultants LLC | Longmont | CO | $0 |
| Mathpro, Inc. | Bethesda | MD | Subcontractor |
| Maxar Mission Solutions Holdings Inc. | Herndon | VA | Subcontractor |
| Maximo Depot Corp. | Falls Church | VA | Subcontractor |
| Mccallum-turner Maryland, Inc. | Annapolis | MD | Subcontractor |
| Mccormick Biological, Inc. | Bakersfield | CA | Subcontractor |
| Mcglothlin Ergonomics LLC | Grand Rapids | MI | Subcontractor |
| Mclean Development Group LLC | Falls Church | VA | Subcontractor |
| Meadowlark Environmental, LLC | Mandan | ND | $0 |
| Medenvvet Laboratories, Inc. | Statesboro | GA | $0 |
| Medical And Radiation Physics, Inc. | San Antonio | TX | $0 |
| Med-tex Services Inc. | Philadelphia | PA | Subcontractor |
| Mercer Capital Management, Inc. | Memphis | TN | $0 |
| Merit Environmental Inc. | Louisville | KY | $0 |
| Merjtech LLC | Ashburn | VA | Subcontractor |
| Michael E. Clark & Associates, Inc. | Macon | GA | Subcontractor |
| Michael L Pack LLC | Columbia | MD | Subcontractor |
| Michelin Mobility Intelligence, Inc. | Greenville | SC | $0 |
| Micon International Limited | Toronto | ON | $0 |
| Micropieces LLC | Mclean | VA | Subcontractor |
| Midtown Video Inc. | Miami | FL | $0 |
| Mike G Consulting Inc. | Washington | DC | Subcontractor |
| Mined Xai LLC | Dayton | OH | Subcontractor |
| Min Force LLC | Palmyra | TN | Subcontractor |
| Mini-mass Consulting, Inc. | St Pete Beach | FL | Subcontractor |
| Minuteman Robotics Analytics Corporation | Belmont | MA | Subcontractor |
| Missionops LLC | Cypress | TX | Subcontractor |
| M.J.W. Corporation Inc. | Buffalo | NY | $0 |
| MJW Technical Services, Inc. | Buffalo | NY | Subcontractor |
| Modell Consulting Group LLC | Nashville | TN | Subcontractor |
| Moger International, LLC | Arlington | VA | Subcontractor |
| Motech, LLC | Farmington Hills | MI | Subcontractor |
| Mountainview Consulting Group LLC | Turner | OR | $0 |
| Mountain West Enterprises, LLC | Monument | CO | Subcontractor |
| Mount Ida Press Ltd. | Albany | NY | $0 |
| MRC Arge Enerji Muhendisligi Kontrol Ve Test Hizmetleri Anonim Sirketi | Ankara | | Subcontractor |
| M.s.i | Chang-won-si | GYEONGSANGNAM-DO | Subcontractor |
| Multimac JV | San Diego | CA | $0 |
| Murphy Michael J | Livermore | CA | $0 |
| Myers Terry L | Eagar | AZ | $0 |
| Nanoscalelabs, LLC | Fairfax | VA | $0 |
| Nas Atc Strategies, LLC | Littleton | CO | Subcontractor |
| Natch Tech LLC | Longmont | CO | Subcontractor |
| National Association Of State Head Injury Administrators | Aldie | VA | Subcontractor |
| National Security Cyberspace Institute, Inc. | Smithfield | VA | Subcontractor |
| Native Community Development Associates LLC | Casa Blanca | NM | $0 |
| Neer Inc. | Sautee Nacoochee | GA | Subcontractor |
| Nelson Julia B | Heiskell | TN | $0 |
| Ness Engineering, Inc. | San Diego | CA | $0 |
| Netit4u Inc. | Lake Butler | FL | $0 |
| Neural Tangent LLC | Hyattsville | MD | Subcontractor |
| New Jersey Micro-electronic Testing, Inc. | Clifton | NJ | $0 |
| New Stone Soup Vt, LLC | Centerville | MA | Subcontractor |
| Nextenergy Center | Detroit | MI | $0 |
| Nexus Energy Solutions, Inc. | Marblehead | MA | Subcontractor |
| Njord Consulting LLC | Chicago | IL | Subcontractor |
| NK2 LLC | Walnut Shade | MO | Subcontractor |
| NLTC Industries, Inc. | North Tonawanda | NY | $0 |
| Nomad Solutions LLC | Gainesville | VA | Subcontractor |
| Nonlinear Solutions, LLC | Franklin | NC | Subcontractor |
| North Carolina Advanced Energy Corporation | Raleigh | NC | $0 |
| Northeastern Pennsylvania Industrial Resource Center Inc. | Hanover Township | PA | $0 |
| Northern Ecologic L.L.C | Suring | WI | $0 |
| North Robotics Inc. | Victoria | BC | $0 |
| Nortol Environmental & Occupational Safety Inc. | San Juan | PR | Subcontractor |
| Notriga, Inc. | Ashburn | VA | $0 |
| Novametrics LLC | Bethesda | MD | Subcontractor |
| Novembri Consulting, LLC | Granite Bay | CA | $0 |
| Nuclear Safety & Technology Services LLC | Palm City | FL | Subcontractor |
| Nuhorizon Technologies, LLC | Atlanta | GA | Subcontractor |
| NV5 Planning & Design, Inc. | Andover | MA | Subcontractor |
| Oasis Answers, Inc. | Redmond | WA | Subcontractor |
| Occamsec LLC | New York | NY | Subcontractor |
| Occupational Research And Assessment, Inc. | Big Rapids | MI | $0 |
| Ocyale Cyber Solutions Inc. | Fredericksburg | VA | Subcontractor |
| Office Of Applied Knowledge & Science, LLC | Fayetteville | GA | Subcontractor |
| Oneill Timothy | Arlington | VA | $0 |
| Open Technologies Inc. | Rio Verde | AZ | $0 |
| Operational Research Institute | Tbilisi | | Subcontractor |
| Opsomer, Jean | Fort Collins | CO | $0 |
| Optical Sensing Consultants, LLC | Niceville | FL | Subcontractor |
| Optiml L.L.C. | Stafford | VA | Subcontractor |
| Orange Defense Consulting LLC | Kettering | OH | Subcontractor |
| Organic Seed Alliance | Port Hadlock | WA | $0 |
| Orion Engineering Services, LLC | Alexandria | VA | Subcontractor |
| Osakeyhtio Surma | Helsinki | | $0 |
| Osm Strategic Consulting LLC | Rockville | MD | Subcontractor |
| Oyster Enclaves | San Francisco | CA | Subcontractor |
| Ozark Solutions, LLC | Herndon | VA | Subcontractor |
| Pacific Habitat Services, Inc. | Wilsonville | OR | $0 |
| Palmetto Ehs, LLC | Salem | SC | $0 |
