| Code | Name | Region |
|---|---|---|
| ATMGN | Meggenhofen | |
| ATMEE | Mehrnbach | 4 |
| ATVNG | Meiningen | 8 |
| ATMEI | Meiselding | 2 |
| ATMEL | Melk | |
| ATMLA | Mellau | 8 |
| ATMER | Merchtrenk | 4 |
| ATMSD | Messendorf | 6 |
| ATMSB | Mettersdorf Am Sassbach | |
| ATZZG | Michaelbeuern | 5 |
| ATMIC | Michelbach | 3 |
| ATMCF | Micheldorf | 2 |
| ATMAK | Micheldorf Am Kienberge | 4 |
| ATMIF | Micheldorf In Karnten | |
| ATMLJ | Maria Laach Am Jauerling | 3 |
| ATZEN | Maria Lanzendorf | |
| ATMR2 | Maria Rain | 2 |
| ATMAS | Maria Saal | 2 |
| ATMDO | Mariasdorf | 1 |
| ATMZL | Mariazell | 6 |
| ATMGL | Markgrafneusiedl | |
| ATMKA | Markt Allhau | 1 |
| ATMPI | Markt Piesting | 3 |
| ATMAR | Marktl | |
| ATMRB | Martinsberg | 3 |
| ATMSF | Martinsdorf | 3 |
| ATMRZ | Marz | 1 |
| ATMBR | Matrei Am Brenner | |
| ATMAT | Mattersburg | |
| ATMTH | Mattighofen | |
| ATMTS | Mattsee | 5 |
| ATMTZ | Matzen | 3 |
| ATMBH | Mauerbach | 3 |
| ATMHK | Mauerkirchen | |
| ATLUW | Ludersdorf-wilfersdorf | 6 |
| ATDSH | Ludesch | 8 |
| ATLTN | Lustenau | |
| ATLTZ | Lutzmannsburg | 1 |
| ATMDR | Mader | 8 |
| ATMDS | Madstein | 6 |
| ATMLB | Mailberg | 3 |
| ATMSN | Maishofen | 5 |
| ATMLH | Mallersbach | 3 |
| ATMNG | Mandling | 6 |
| ATMAL | Mannersdorf Am Leithagebirge | 3 |
| ATMNN | Mannersdorf An Der March | 3 |
| ATMAN | Manning | 4 |
| ATMW3 | Mannsworth | 3 |
| ATMAB | Marbach An Der Donau | 3 |
| ATGGM | Marchegg | 3 |