| M&D | Maintenance and Diagnostics 
| Others |
| M&E | Machinery and Equipment
| Others |
| M&E | Mechanical and Electrical
| Others |
| M&E | Memorize and Eat
| Others |
| M&E | Monitoring and Evaluation
| Others |
| M&E | Monitoring and Evolution
| Others |
| M&F | Maserati e Ferrari
| Others |
| M&F | Materials and Facilities
| Others |
| M&F | Mazda and Ford
| Others |
| M&F | Mobility and Function
| Others |
| M&F | Mother and Father
| Others |
| M&F | Mustang and Fords
| Others |
| M&G | Maharashtra & Goa
| Others |
| M&H | Mann and Hummel
| Others |
| M&HCV | Medium and Heavy Commercial Vehicle
| Others |
| M&I | Maintenance & Improvement
| Others |
| M&IE | Meals and Incidental Expense
| Others |
| M&IE | Meals and Incidental Expenses
| Others |
| M&K | Mouse and Keyboard
| Others |
| M&L | Mario & Luigi
| Others |
| M&M | Mahindra & Mahindra
| Others |
| M&M | Mahindra and Mahindra
| Others |
| M&M | Maps and More
| Others |
| M&M | Mars & Murrie
| Others |
| M&M | Materials and Maintenance
| Others |
| M&M | Materials and Methods
| Others |
| M&M | Mechanical and Material
| Others |
| M&M | Memory and Microprocessor
| Others |
| M&M | Mitigation and Monitoring
| Others |
| M&M | Morbidity and Mortality
| Others |
| M&M's | More And More Sweets
| Others |
| M&MOC | Maestro and Montego Owners Club
| Others |
| M&MWR | Morbidity and Mortality Weekly Report
| Others |
| M&N | Mydriacyl & Neosynephrine
| Others |
| M&O | Maintenance and Operation
| Others |
| M&O | Maintenance and Operations
| Others |
| M&O | Maps and Overlays (Client)
| Others |
| M&P | Materials & Processes
| Others |
| M&P | Materials and Processes
| Others |
| M&P | Materials and Processing
| Others |
| M&PS | Movie & Play Scripts
| Others |
| M&PT | Materials & Process Technology
| Others |
| M&R | Maintenance and Refurbishment
| Others |
| M&R | Maintenance and Repair
| Others |
| M&R | Monitoring and Reporting
| Others |
| M&RF | Maintenance and Refurbishing Facility
| Others |
| M&RO | Maintenance and Refurbishment Operations
| Others |
| M&S | Marks & Spencer
| Company |
| M&S | Mathematics & Statistics
| Others |
| M&S | Modeling and Simulation
| Others |