| Port Code | Port Name | Country |
| BEMLW | Morlanwelz-Mariemont | Belgium |
| BEMLX | Moulbaix | Belgium |
| BEMLY | Marly | Belgium |
| BEMMA | Mont-sur-Marchienne | Belgium |
| BEMMN | Maasmechelen | Belgium |
| BEMND | Molenstede | Belgium |
| BEMNE | Martouzin-Neuville | Belgium |
| BEMNL | Melen | Belgium |
| BEMNO | Moen | Belgium |
| BEMNT | Mont | Belgium |
| BEMOB | Montleban | Belgium |
| BEMOD | Modave | Belgium |
| BEMOE | Moelingen | Belgium |
| BEMOL | Moorsel | Belgium |
| BEMOM | Momignies | Belgium |
| BEMON | Montignies-le-Tilleul | Belgium |
| BEMOO | Moorsele | Belgium |
| BEMOR | Mortsel | Belgium |
| BEMOS | Moeskroen (Mouscron) | Belgium |
| BEMOS | Mouscron (Moeskroen) | Belgium |
| BEMOT | Montzen | Belgium |
| BEMPS | Merksplas | Belgium |
| BEMQS | Mons | Belgium |
| BEMRD | Merendree | Belgium |
| BEMRE | Meerbeek | Belgium |
| BEMRG | Maurage | Belgium |
| BEMRI | Mariakerke | Belgium |
| BEMRK | Merksem | Belgium |
| BEMRL | Merelbeke | Belgium |
| BEMRM | Merkem | Belgium |
| BEMRQ | Marquain | Belgium |
| BEMRS | Moorslede | Belgium |
| BEMSA | Mont-Saint-Aubert | Belgium |
| BEMSD | Martenslinde | Belgium |
| BEMSE | Mesen | Belgium |
| BEMSG | Mont-Sainte-Aldegonde | Belgium |
| BEMSI | Monsin | Belgium |
| BEMSJ | Molenbeek-Saint-Jean (Sint-Jans-Molenbeek)/Brussel | Belgium |
| BEMSJ | Sint-Jans-Molenbeek (Molenbeek-Saint-Jean)/Brussel | Belgium |
| BEMSK | Maaseik | Belgium |
| BEMSL | Musson | Belgium |
| BEMSN | Maissin | Belgium |
| BEMSO | Messelbroek | Belgium |
| BEMSR | Maisières | Belgium |
| BEMSS | Monceau-sur-Sambre | Belgium |
| BEMSU | Mont-Saint-Guibert | Belgium |
| BEMTA | Martelange | Belgium |
| BEMTE | Mettet | Belgium |
| BEMTX | Mortroux | Belgium |
| BEMUI | Muizen | Belgium |
| BEMUL | Maulde | Belgium |
| BEMUN | Muno | Belgium |
| BEMUS | Moustier | Belgium |
| BEMUX | Meux | Belgium |
| BEMVA | Mainvault | Belgium |
| BEMVI | Mesvin | Belgium |
| BEMWE | Molenbeek-Wersbeek | Belgium |
| BEMZT | Maizeret | Belgium |
| BENAM | Namur | Belgium |
| BENAS | Naast | Belgium |
| BENBA | Nimy | Belgium |
| BENCA | Neufchâteau | Belgium |
| BENCO | Neuville-en-Condroz | Belgium |
| BENCU | Neufchâteau | Belgium |
| BENDI | Nandrin | Belgium |
| BENED | Nederokkerzeel | Belgium |
| BENEG | Neigem | Belgium |
| BENES | Nessonvaux | Belgium |
| BENEU | Neufvilles | Belgium |
| BENFO | Noirefontaine | Belgium |
| BENHR | Nederzwalm-Hermelgem | Belgium |
| BENIE | Nieuwpoort | Belgium |
| BENIL | Niel | Belgium |
| BENIV | Nivelles | Belgium |
| BENLA | Neerlanden | Belgium |
| BENMA | Neufmaison | Belgium |
| BENMO | Neu-Moresnet | Belgium |
| BENNE | Naninne | Belgium |
| BENNV | Ninove | Belgium |
| BENOK | Nokere | Belgium |
| BENPE | Neupré | Belgium |
| BENRO | Nieuwrode | Belgium |
| BENRP | Neerpelt | Belgium |
| BENRT | Neeroeteren | Belgium |
| BENRY | Renory | Belgium |
| BENSO | Nassogne | Belgium |
| BENTE | Natoye | Belgium |
| BENUK | Nukerke | Belgium |
| BENVE | Nouvelles | Belgium |
| BENVH | Neder-Over-Heembeek | Belgium |
| BENVL | Nevele | Belgium |
| BENVN | Noeveren | Belgium |
| BENVX | Nollevaux | Belgium |
| BENWE | Nieuwerkerken | Belgium |
| BENWK | Nieuwerkerken | Belgium |
| BENWO | Nieuwenhove | Belgium |
| BENYL | Nijlen | Belgium |
| BENZH | Nazareth | Belgium |
| BEOAY | Onhaye | Belgium |
| BEOBC | Broechem | Belgium |