The canton Tonneins has 13 communes.
| Code | Name | Population ▼ |
|---|---|---|
| 47310 | Tonneins | 9 459 |
| 47065 | Clairac | 2 606 |
| 47054 | Castelmoron-sur-Lot | 1 842 |
| 47095 | Fauillet | 864 |
| 47127 | Lafitte-sur-Lot | 832 |
| 47316 | Varès | 655 |
| 47317 | Verteuil-d'Agenais | 539 |
| 47112 | Grateloup-Saint-Gayrand | 469 |
| 47135 | Laparade | 395 |
| 47071 | Coulx | 256 |
| 47042 | Brugnac | 180 |
| 47122 | Labretonie | 167 |
| 47118 | Hautesvignes | 163 |