| Abbreviation | Designation | |
|---|---|---|
| MZ | Mittelzentrum (German) | |
| MŽ | Makedonski Železnici (Macedonian) Macedonian Railway Transport, Macedonian Railway Transport plc Skopje | railway company |
| PL-MZ | Mazowieckie, Województwo Mazowieckie (Polish) Masovian | country code |
| MZ | Mainz Hbf, Landeshauptstadt Mainz (German) | fare point / vehicle registration plate |
| Mz | ED Mainz (1920–1922), Eisenbahndirektion Mainz (German) | railway administration |
| Mz | ED Mainz (1946–1953), Eisenbahndirektion Mainz (German) | railway administration |
| Mz | Rbd Mainz (1922–1937), Reichsbahndirektion Mainz (German) | railway administration |
| Mz | RBD Mainz (1937–1946), Reichsbahndirektion Mainz (German) | railway administration |