| LMP Alliance LLC | Woodbridge | VA | Subcontractor |
| L&M Solutions, L.L.C. | Columbia | MD | Subcontractor |
| LNP Enterprises, LLC | Centreville | VA | Subcontractor |
| Log Dog Consulting LLC | Beavercreek Township | OH | Subcontractor |
| Loggerhead Dynamics, LLC | Lutz | FL | $0 |
| Long Capture & Contract Management LLC | Colorado Springs | CO | $0 |
| Longford Consulting Inc. | Severna Park | MD | Subcontractor |
| LQD Communications Inc. | Hollywood | MD | Subcontractor |
| Lucy Carpenter | Washington | DC | $0 |
| Ludwig Psychological Services LLC | Lake Worth | FL | $0 |
| Lumbee Support Solutions, LLC | Pembroke | NC | Subcontractor |
| Lund Consultants To Broadcast Management, Inc. The | Reno | NV | $0 |
| Luz Electi LLC | Jacksonville Beach | FL | Subcontractor |
| L-W Resources Inc. | Longview | TX | Subcontractor |
| M2P Consulting Inc. | Greenwich | CT | Subcontractor |
| M365 Solutions LLC | Lone Tree | CO | Subcontractor |
| Mackee, Inc. | Trevose | PA | Subcontractor |
| Madden & Laney LLC | Tampa | FL | $0 |
| Maddern Consulting, LLC | Fairfax | VA | Subcontractor |
| Madrigal Transportation LLC | Omaha | NE | $0 |
| M+a Global, Inc. | Columbus | OH | $0 |
| Magnitude Global Finance LLC | Washington | DC | Subcontractor |
| Magris Solutions Inc. | Tavernier | FL | $0 |
| Mahr Citadel Solutions, LLC | La Plata | MD | Subcontractor |
| Malone, Patrick | Chesapeake Beach | MD | $0 |
| Management Business Solutions Inc. | Grand Rapids | MI | $0 |
| Manitou Inc. | Peekskill | NY | $0 |
| Manson-dixon Line LLC | Hollywood | MD | Subcontractor |
| Mantid International LLC | Fountain Hills | AZ | Subcontractor |
| Manufacturing Advocacy & Growth Network Inc. | Cleveland | OH | Subcontractor |
| Maritime Systems Support LLC | Annapolis | MD | $0 |
| Mark A. Frankle, M.d., P.a. | Tampa | FL | $0 |
| Mark Bodnarczuk | Longmont | CO | $0 |
| Mark Maier | Orange | CA | $0 |
| Martin Blanck & Associates LLC | Alexandria | VA | Subcontractor |
| Materna LLC Jane M | Falls Church | VA | $0 |
| Matrixowl, LLC | Golden | CO | Subcontractor |
| Matrix Systems & Technologies Inc. | Upper Marlboro | MD | Subcontractor |
| Maulbeck LLC | Newport News | VA | Subcontractor |
| Maurice's Management Consulting MMC LLC | Waynesville | OH | Subcontractor |
| Maven Strategies, LLC | Reston | VA | Subcontractor |
| Maxima Consulting Doo Beograd | Beograd | | Subcontractor |
| Maximizing Organizational Resources Associates, Inc. | Watertown | MA | Subcontractor |
| MBG LLC | Mountain Home | ID | $0 |
| Mbi LLC | Coatesville | PA | $0 |
| Mcaps LLC | Washington | DC | $0 |
| Mcfarland & Associates, Inc. | Sandy Spring | MD | $0 |
| Mcgeown Associates LLC | Bridgewater | NJ | Subcontractor |
| Mcintyre, Inc. | Niceville | FL | $0 |
| Mcloughlin & Associates, LLC | Helotes | TX | Subcontractor |
| Mcmenamin Consulting Group LLC | Arlington | VA | Subcontractor |
| Mcmillion Leadership Associates LLC | Clarksburg | WV | $0 |
| Mco Construction & Services Inc. | Miami | FL | $0 |
| M-con Strategic Solutions LLC | Vienna | VA | Subcontractor |
| MDT Strategic Ventures Inc. | Fort Worth | TX | $0 |
| Medescort International, Inc. | Allentown | PA | $0 |
| Mediation Specialists Inc. | Rochester Hills | MI | $0 |
| Mediation Works Inc. | Boston | MA | $0 |
| Medical Care Development Inc. | Hallowell | ME | Subcontractor |
| Medical Evaluators Of Texas Aso, LLC | Houston | TX | $0 |
| Mekong Strategic Capital (cambodia) Co. Ltd. | Phnom Penh | | Subcontractor |
| Melissa Adams Strategies, LLC | Ashburnham | MA | Subcontractor |
| Melvin Byrne | Hamilton | VA | $0 |
| Mercadante Walker Consulting | Wayne | PA | Subcontractor |
| Mercados Aries International Sa. | Madrid | | Subcontractor |
| Mercator Advisors, LLC | Port Chester | NY | $0 |
| Meridian Institute | Frisco | CO | Subcontractor |
| Metric Inc. | Washington | DC | $0 |
| Metricnet, LLC | Incline Village | NV | $0 |
| Metropolitan Consulting Corporation | Washington | DC | Subcontractor |
| Metro-source, LLC | New Orleans | LA | $0 |
| Meurer Municipal Consulting Services, LLC | Salinas | CA | Subcontractor |
| MGT Impact Solutions, LLC | Tampa | FL | $0 |
| Mha Health Foundation | Okemos | MI | Subcontractor |
| Mha Keystone Center | Okemos | MI | Subcontractor |
| MHC LLC | Bethesda | MD | Subcontractor |
| M. H. West & Co. Inc. | Richmond | VA | $0 |
| Michael L Ward | Vancouver | WA | $0 |
| Microdata Systems Inc. | Point Pleasant Beach | NJ | Subcontractor |
| Midas Group, LLC | Lawrenceville | GA | $0 |
| Middlestreet Consulting LLC | Bowie | MD | $0 |
| Midwaters Consulting Group LLC | Arlington | VA | $0 |
| Mike Robbins LLC | Novato | CA | $0 |
| Military Housing And Lodging Institute | Lovettsville | VA | Subcontractor |
| Mind Fit Coaching LLC | New Braunfels | TX | $0 |
| Mission Wide Training LLC | Huntsville | AL | $0 |
| M Jamal Foster Foundation Inc. 4H Management | Baltimore | MD | $0 |
| MJKD And Associates, Inc. | San Antonio | TX | $0 |
| M J Martin Inc. | Lincoln | NE | $0 |
| Mm And Associates, Inc. | Edgewater | MD | $0 |
| Modern Industry Services Inc. | Orlando | FL | $0 |
| Momentum, Inc. | Camp Hill | PA | Subcontractor |
| Monarch Community Resources, LLC | Cobb Island | MD | Subcontractor |
| Monica V Consulting LLC | Moorhead | MN | Subcontractor |
| Montcure LLC | Dumfries | VA | Subcontractor |
| Moon, Rachel | Bethesda | MD | $0 |
| Moonshot Global, LLC | Bethesda | MD | Subcontractor |
| Moran Consulting Inc. | Chicago | IL | $0 |
| Morgan Lynn Marie | Placerville | CA | $0 |
| Morning Moon Consulting Services, LLC | Powhatan | VA | Subcontractor |
