| Code | Name | Region |
|---|---|---|
| DEMBR | Meckenbeuren | BW |
| DEMEC | Meckenheim | NW |
| DECKE | Meckesheim | BW |
| DEMK2 | Mecklar | HE |
| DEMED | Meddersheim | RP |
| DEMDB | Medebach | NW |
| DEMDZ | Medewitz | BB |
| DEZJP | Meeder | BY |
| DEMRE | Meerane | SN |
| DEMRH | Meerbusch | NW |
| DEMBG | Meersburg | BW |
| DEEHL | Mehlingen | RP |
| DEMXY | Mehren | RP |
| DEMHR | Mehring | RP |
| DEMXX | Massen | BB |
| DE79O | Massenbachhausen | BW |
| DEMQN | Massenhausen | BY |
| DEMS9 | Masserberg | TH |
| DEMYY | Massing | BY |
| DEMPN | Mastershausen | RP |
| DEMUX | Mauer | BW |
| DEMFN | Mauern | BY |
| DEUTN | Mauerstetten | BY |
| DEMBN | Maulbronn | BW |
| DEMLB | Maulburg | BW |
| DEMZD | Mausdorf | BY |
| DEMXA | Maxau | BW |
| DEMAX | Maxdorf/pfalz | RP |
| DEMXZ | Maxhutte (zwickau) | SN |
| DEXTH | Maxhutte-haidhof | BY |
| DEMXM | Maximiliansau | RP |
| DEMAY | Mayen | RP |
| DEMYF | Mayerhofen | BY |
| DE82O | Mayschoss | RP |
| DEMSX | Marloffstein | BY |
| DEMLO | Marlow | MV |
| DEMAE | Marne | SH |
| DEMAN | Marnheim | RP |
| DEMWH | Maroldsweisach | BY |
| DEMQT | Marquardt | BB |
| DEMSG | Marsberg | NW |
| DEMRT | Marschacht | NI |
| DEMSK | Martinskirchen | BB |
| DEMRR | Martinsried | BY |
| DENS3 | Martinsthal | HE |
| DEMXI | Marx | NI |
| DEMXE | Marxen | NI |
| DEXDY | Marxzell | BW |
| DEMZA | Marzahne | BB |
| DEMZL | Marzell | BW |