The canton Le Sud-Est agenais has 19 communes.
| Code | Name | Population ▼ |
|---|---|---|
| 47145 | Layrac | 4 010 |
| 47051 | Castelculier | 2 382 |
| 47015 | Astaffort | 1 972 |
| 47060 | Caudecoste | 1 127 |
| 47128 | Lafox | 1 098 |
| 47217 | Puymirol | 899 |
| 47269 | Saint-Pierre-de-Clairac | 899 |
| 47234 | Saint-Caprais-de-Lerm | 713 |
| 47248 | Saint-Jean-de-Thurac | 563 |
| 47288 | Sauvagnas | 519 |
| 47262 | Saint-Nicolas-de-la-Balerme | 424 |
| 47274 | Saint-Romain-le-Noble | 412 |
| 47092 | Fals | 403 |
| 47067 | Clermont-Soubiran | 395 |
| 47293 | Sauveterre-Saint-Denis | 387 |
| 47279 | Saint-Sixte | 363 |
| 47076 | Cuq | 278 |
| 47281 | Saint-Urcisse | 242 |
| 47113 | Grayssas | 150 |