Manu - Mili
- Manual
- Manual steering
- Manual transmission
- Manually-operated brake
- Manufacturing number
- Manufacturing process
- Marker
- Marker lights
- Mass production
- Master brake cylinder (master cylinder)
- Master spring leaf
- Material handling
- Material handling equipment
- Maximum allowable height
- Maximum allowable speed
- Maximum allowable weight
- Maximum allowable width
- Mean effective pressure
- Mean piston speed
- Measuring tool
- Mechanical advantage
- Mechanical brake
- Mechanical efficiency
- Mechanical equipment
- Mechanical equivalent of heat
- Mechanical transmission
- Mechanics
- Mechanism
- Medical lorry
- Meshing
- Metalled road
- Methane
- Metric system
- Micrometer
- Microswitch
- Mileage counter
- Mileage indicator (mileage recorder)
- Miles per gallon (m.p.g.)
