| Port Code | Port Name | Country |
| BEKNO | Knokke/Het Zoute | Belgium |
| BEKNS | Knesselaere | Belgium |
| BEKOE | Koekelberg/Brussel (Bruxelles) | Belgium |
| BEKOI | Kooigem | Belgium |
| BEKON | Kontich | Belgium |
| BEKOO | Koolskamp | Belgium |
| BEKOS | Koersel | Belgium |
| BEKOU | Kallo | Belgium |
| BEKPB | Kapelle-op-den-Bos | Belgium |
| BEKPN | Kapellen | Belgium |
| BEKRA | Kraainem | Belgium |
| BEKRI | Kaprijke | Belgium |
| BEKRN | Kuringen | Belgium |
| BEKRO | Kinrooi | Belgium |
| BEKSE | Kasterlee | Belgium |
| BEKSN | Kessenich | Belgium |
| BEKSO | Kessel-Lo | Belgium |
| BEKSR | Kluisbergen | Belgium |
| BEKTB | Kortenberg | Belgium |
| BEKTE | Kettenis | Belgium |
| BEKTK | Kortemark | Belgium |
| BEKTM | Kortessem | Belgium |
| BEKTT | Kalmthout | Belgium |
| BEKUU | Kuurne | Belgium |
| BEKVE | Klein Veerle | Belgium |
| BEKWA | Kwaadmechelen | Belgium |
| BELAA | Laarne | Belgium |
| BELAD | Landen | Belgium |
| BELAK | Langemark | Belgium |
| BELAM | Lamain | Belgium |
| BELAN | Lanaken | Belgium |
| BELAP | La Calamine | Belgium |
| BELAS | Lasne | Belgium |
| BELBE | Lembeek | Belgium |
| BELBK | Lubbeek | Belgium |
| BELBN | Libin | Belgium |
| BELBO | La Bouverie | Belgium |
| BELBS | Lobbes | Belgium |
| BELBU | Les Bulles | Belgium |
| BELBY | La Bruyère | Belgium |
| BELCA | l'Escaillière | Belgium |
| BELCE | Lincent | Belgium |
| BELCI | Liberchies | Belgium |
| BELCU | Lacuisine | Belgium |
| BELDI | Lesdain | Belgium |
| BELDK | Liedekerke | Belgium |
| BELDO | Langdorp | Belgium |
| BELDS | Landelies | Belgium |
| BELEB | Lebbeke | Belgium |
| BELED | Lede | Belgium |
| BELEG | Ledegem | Belgium |
| BELER | Liers | Belgium |
| BELES | Lessines | Belgium |
| BELEU | Leuven | Belgium |
| BELFA | Leefdaal | Belgium |
| BELFE | Leffinge | Belgium |
| BELFG | Longueville | Belgium |
| BELGA | Longchamps | Belgium |
| BELGB | Langerbrugge | Belgium |
| BELGG | Liège | Belgium |
| BELGI | Léglise | Belgium |
| BELGN | Ligne | Belgium |
| BELGO | Langerlo | Belgium |
| BELGY | Ligney | Belgium |
| BELHK | Liefkenshoek | Belgium |
| BELHL | La Hulpe | Belgium |
| BELHO | Letterhoutem | Belgium |
| BELHT | Leuze-en-Hainaut | Belgium |
| BELIB | Libramont-Chevigny | Belgium |
| BELIC | Lichtervelde | Belgium |
| BELIE | Lier | Belgium |
| BELIK | Lennik | Belgium |
| BELIL | Lillo | Belgium |
| BELIM | Limbourg | Belgium |
| BELIN | Linter | Belgium |
| BELIR | Sint-Martens-Lierde | Belgium |
| BELIX | Lixhe | Belgium |
| BELKE | Lembeke | Belgium |
| BELKK | Linkebeek | Belgium |
| BELKO | Loker | Belgium |
| BELLE | Lille | Belgium |
| BELLN | Louvain-la-Neuve | Belgium |
| BELLO | La Louvière | Belgium |
| BELME | Limelette | Belgium |
| BELML | Lommel | Belgium |
| BELND | Lendelede | Belgium |
| BELNE | Laneffe | Belgium |
| BELNI | Lint | Belgium |
| BELNK | Lanklaar | Belgium |
| BELNS | Lens | Belgium |
| BELNX | Lierneux | Belgium |
| BELNY | Lanaye (Ternaaien) | Belgium |
| BELNY | Ternaaien (Lanaye) | Belgium |
| BELNZ | Londerzeel | Belgium |
| BELOC | Loncin | Belgium |
| BELOD | Lodelinsart | Belgium |
| BELOH | Lochristi | Belgium |
| BELOK | Lokeren | Belgium |
| BELOP | Lompret | Belgium |
| BELOT | Lot | Belgium |