The canton Landerneau has 9 communes.
| Code | Name | Population ▼ |
|---|---|---|
| 29103 | Landerneau | 16 363 |
| 29181 | Plouédern | 3 103 |
| 29156 | Pencran | 2 234 |
| 29056 | La Forest-Landerneau | 2 018 |
| 29268 | Saint-Thonan | 1 956 |
| 29237 | La Roche-Maurice | 1 893 |
| 29245 | Saint-Divy | 1 605 |
| 29295 | Trémaouézan | 483 |
| 29116 | Lanneuffret | 158 |