Each two-part code consists of the ISO 3166-1 code for Timor-Leste (TL) and a 2-character-alphabetic sub-code, hyphenated together.
| Code | Name |
|---|---|
| TL-AL | Aileu |
| TL-AN | Ainaro |
| TL-BA | Baucau |
| TL-BO | Bobonaro |
| TL-CO | Cova-Lima |
| TL-DI | Dili |
| TL-ER | Ermera |
| TL-LA | Lautem |
| TL-LI | Liquiçá |
| TL-MF | Manufahi |
| TL-MT | Manatuto |
| TL-OE | Oecussi |
| TL-VI | Viqueque |