| Code | Name | Region |
|---|---|---|
| IDLRT | Larat | |
| IDLWG | Lawang | JI |
| IDLLA | Lawe-lawe, Kl | |
| IDLAB | Lemah Abang | JB |
| ID5LE | Lembang | JB |
| IDLBR | Lembar | NB |
| IDLHI | Lereh | |
| IDLEU | Leuwiliang | JB |
| IDLWE | Lewoleba | |
| IDLSX | Lhok Sukon | |
| IDLHK | Lhoknga | |
| IDLSW | Lhokseumawe | AC |
| IDLIF | Lifamatola | |
| IDENO | Kuala Enok | |
| IDKKA | Kuala Kapuas, Kl | |
| IDKNO | Kuala Namu Intl Apt/medan | SU |
| IDKUA | Kualalangsa | AC |
| IDKMA | Kualamandah | RI |
| IDKTJ | Kualatanjung | SU |
| IDKTK | Kualatungkal | |
| IDKUD | Kudus | JT |
| IDKUG | Kulonprogo | JB |
| IDKUM | Kumai | KT |
| IDKKB | Kunak, Borneo | |
| IDKUN | Kuningan | JB |
| IDKOE | Kupang, Timor | |
| IDKUT | Kuta | BA |
| IDLAA | Labuan | SG |
| IDLBO | Labuan Bajo | NT |
| IDLBJ | Labuanbajo | |
| IDLAH | Labuha, Molucas | |
| IDLAJ | Labuhan | BT |
| IDLHT | Lahat | SS |
| IDKMM | Kimam | |
| IDKIS | Kisaran | SA |
| IDKLA | Klari | JB |
| IDKLE | Klaten | JT |
| IDKL3 | Kletek | NT |
| IDKOJ | Koja | JB |
| IDKOK | Kokas | PB |
| IDKOX | Kokonao | |
| IDKOL | Kolaka | SG |
| IDKNL | Kolonodale | ST |
| IDKMD | Komodo | NT |
| IDKCI | Kon | |
| IDKOD | Kotabangun | |
| IDKBU | Kotabaru | |
| IDKPN | Kotapinang, Baru | |
| IDKOT | Kotatengah | LA |
| IDKRA | Kragilan | JT |