| Type: | canton |
| Saint-Quentin-3 | |
| Seat: | Saint-Quentin |
| Nbcomm: | 9 |
| Insee: | 02 15 |
| Area: | 62.09 |
The canton of Saint-Quentin-3 (before 2015: Saint-Quentin-Sud) is an administrative division in northern France. It consists of the southern part of the town of Saint-Quentin and its southern suburbs. At the French canton reorganisation which came into effect in March 2015, the canton was expanded from 6 to 9 communes:[1]