- metropolitan/micropolitan statistical area
- Metropolitan Museum of Art，New York
- Metropolitan Officials
- Metropolitan Opera House
- metropolitan planning
- Metropolitan Police
- metropolitan special district
- metropolitan state
- metrorrhagia and metrostaxis
- metroscope
- metro station
- metro station building
- metro vehicle
- metro vehicle depot
- metsulfuron-methyl
- METT
- mettle of person who owns exceptional abilities
- metulae
- Metz
- Meudon Astrophysical Observatory
- Meudon Observatory
- meurement of time-resolved spectrum
- meuse valley fog
- Meusnier
- Meusnier theorem