| Vendor | Awards | Awarded value | Top agency |
|---|---|---|---|
| Master Research & Manufacturing, Inc. | 3 | $111K | Defense Logistics Agency |
| Mastercontrol Solutions, Inc. | 3 | $748K | Defense Health Agency |
| Masters Gallery Foods, Incorporated | 99 | $190M | Agricultural Marketing Service |
| Mastodon Design LLC | 5 | $141M | Department of the Army |
| Mat Construction Leasing, Inc. | 23 | $187M | City of Chicago |
| Mateo Advisors LLC | 10 | $58K | San Francisco |
| Mateson Chemical Corp | 5 | $655K | MTA Procurements |
| Mathematica Inc. | 44 | $689M | Centers for Medicare and Medicaid Services |
| Matheson Tri-Gas, Inc. | 8 | $31K | City of Mesquite |
| Mathtech Inc | 15 | $19M | Department of the Navy |
| The Mathworks, Inc. | 13 | $3.0M | Department of the Navy |
| Matos Builders LLC | 3 | $3.9M | Federal Bureau of Investigation |
| Matrix Global Services USA Inc | 8 | $16M | MTA Procurements |
| Matrix Railway Corp | 34 | $3.6M | MTA Procurements |
| Matterhackers, Inc. | 4 | $167K | Defense Logistics Agency |
| Matthew Mederer | 3 | $3K | City of Chicago |
| The Matthews Group Inc | 7 | $5.6M | Department of the Army |
| Matthews International Corporation | 15 | $79M | Department of Veterans Affairs |
| Matuszak-Hygiene GMBH & Co. KG | 4 | $295K | Department of the Army |
| Mauna Kea Technologies, Inc. | 4 | $62K | Defense Health Agency |
| Maureen Data Systems, Inc. | 15 | $3.1M | New York City |
| Maven Construction & Environmental, LLC | 5 | $946K | Department of the Navy |
| Maven Engineering Corporation | 8 | $323K | Defense Logistics Agency |
| Maven Retail | 3 | $442K | San Francisco |
| Maverick Construction Corporation | 3 | $3.4M | NY State Authorities |
| Maverick Constructors, LLC | 3 | $14M | Department of the Army |
| Mavis Tire Supply LLC | 14 | $17K | City-Parish of Baton Rouge |
| Max Gray Construction, Inc. | 3 | $512K | Department of the Army |
| Maximum Midrange Computer Specialists Inc | 5 | $157K | Defense Logistics Agency |
| Maximum Plumbing - VEPO Metering NYC JV LLC | 6 | $78M | New York City |
| Maximus Federal Services, Inc. | 8 | $370M | Centers for Medicare and Medicaid Services |
| Maximus US Services, Inc. | 4 | $2.2M | City of Chicago |
| Maxpro Enterprise LLC | 8 | $8K | City of Mesquite |
| The Maxter Group Inc | 3 | $52K | Offices, Boards and Divisions |
| Maxton Manufacturing Company | 3 | $0 | MTA Procurements |
| Maxx Designs LLC | 6 | $33K | City-Parish of Baton Rouge |
| Mayday Communication, Inc. | 3 | $309K | MTA Procurements |
| Mayer'Sche Hofkunstanstalt GMBH | 3 | $480K | MTA Procurements |
| Mayo Clinic | 7 | $31M | Federal Prison System / Bureau of Prisons |
| Mayo Collaborative Services, Inc. | 4 | $778K | Defense Health Agency |
| Mayointhemix LLC | 4 | $329K | Department of Energy |
| Maytag Aircraft LLC | 4 | $18M | Defense Logistics Agency |
| Mayumi Lake | 3 | $8K | City of Chicago |
| Mayvin, Inc. | 8 | $18M | U.S. Marshals Service |
| Maziuk Wholesale Distributors | 12 | $1.7M | MTA Procurements |
| Mazzella Lifting Technologies, Inc. | 5 | $99K | Department of the Navy |
| MB Markland Contracting Co | 4 | $892K | Federal Aviation Administration |
| Mba Office Supply, Inc. | 26 | $1K | Federal Acquisition Service |
| Mbfca Baton Rouge LLC | 149 | $127K | City-Parish of Baton Rouge |
| MC & R Enterprises, Inc | 16 | $25K | Defense Logistics Agency |
| MC2 Engineering and Construction, P.c. | 3 | $906K | National Park Service |
| McCarey Landscaping Inc | 3 | $5.4M | New York City |
| McClafferty Printing | 4 | $25K | State of Delaware |
| McClain Trailers Inc | 8 | $6K | City-Parish of Baton Rouge |
| McClure Electric Inc | 6 | $4.8M | San Francisco |
| McConway and Torley LLC | 8 | $349K | MTA Procurements |
| McCray Group Ventures LLC | 9 | $258K | Department of the Air Force |
| McCulloch Rail | 4 | $968K | MTA Procurements |
| McDaniel Farms Inc | 9 | $4.9M | Bureau of Land Management |
| McDermott Center | 15 | $4.2M | City of Chicago |
| McDermott Center|cleaned-Up | 25 | $22M | City of Chicago |
| McDonagh Demolition, Inc. | 9 | $170M | City of Chicago |
| McE TLR Hydraulics, LLC | 13 | $155K | City of Mesquite |
| McGee Industries, Inc. | 3 | $112K | MTA Procurements |
| McGrath Rentcorp | 5 | $489K | Department of the Army |
| McGuire & Hester | 15 | $23M | San Francisco |
| McHc-Chicago Hospital Council | 3 | $278K | City of Chicago |
| McI Solutions Inc | 7 | $425K | Defense Logistics Agency |
| McIntire Management Group Inc | 8 | $87K | City-Parish of Baton Rouge |
| McIntosh Controls Corp | 3 | $285K | MTA Procurements |
| McIntyre Casa View Wrecker | 96 | $48K | City of Mesquite |
| McKenzie Construction & Site Development LLC | 5 | $13M | National Park Service |
| McKesson Corporation | 4 | $45K | Federal Prison System / Bureau of Prisons |
| McKesson Medical-Surgical | 85 | $86K | City of Los Angeles Controller |
| McKesson Medical-Surgical Government Solutions LLC | 4 | $8.7M | Office of Assistant Secretary for Preparedness and Response |
| McKinney Autoplex Inc | 57 | $29K | City of Mesquite |
| McKinsey and Company, Inc Washington DC | 19 | $56M | MTA Procurements |
| McKissack Group Inc | 3 | $147M | MTA Procurements |
| McLellan Integrated Professional Services LLC | 3 | $928K | Department of Veterans Affairs |
| McMahon Contracting LP | 9 | $3.4M | City of Mesquite |
| McMaster-Carr | 4 | $33K | MTA Procurements |
| McMaster - Carr Supply | 95 | $31K | City of Los Angeles Controller |
| McMillan James Equipment Company LLC | 3 | $167K | City of Mesquite |
| McMillen, Inc. | 4 | $51M | Department of the Army |
| MCP Computer Products Inc | 10 | $20M | Office of the Assistant Secretary for Financial Resources |
| McQuade and Bannigan Inc | 10 | $345K | NY State Authorities |
| McRae Industries Inc | 8 | $11M | Defense Logistics Agency |
| MCS of Tampa, Inc. | 8 | $2.0M | Department of the Air Force |
| MCT Industries, Inc. | 7 | $1.3M | Defense Logistics Agency |
| McVac Environmental Services Inc | 3 | $1.7M | NY State Authorities |
| MDF Technologies Inc | 52 | $2.2M | Defense Logistics Agency |
| MDM Construction LLC | 7 | $203K | Department of the Air Force |
| MDM Construction Supply, LLC | 3 | $3.6M | Department of the Army |
| MDM Mac Enterprises Inc | 3 | $1.1M | Department of the Army |
| MDS L.l.c. | 4 | $273K | Department of the Navy |
| Me&A, Inc. | 4 | $37M | Agency for International Development |
| Meacham Electronics Service Center | 5 | $301K | MTA Procurements |
| Meak Solutions LLC. | 5 | $256K | Defense Logistics Agency |
| Meals on Wheels | 4 | $94M | San Francisco |
| Meals on Wheels of Staten Island Inc | 3 | $19M | New York City |
Vendor totals add up the award records RFPFinder holds: federal contract awards from USAspending.gov for the agencies and codes behind open notices, and state and local awards from open-data contract registers and purchase-order files. They are not a vendor's complete government revenue, and a register that lists a contract ceiling or repeats a contract can overstate spend. Names are grouped across spellings ("Corp" and "Corporation"); each award links to its source record. Subcontracts are prime contractors' subaward reports on USAspending.gov for the prime awards behind the same agencies and codes, and GSA Schedule contracts come from GSA eLibrary's MAS contractor list; both are matched to vendors by name.