| Sains-lès-Pernes | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason Sains-lès-Pernes.svg |
| Arrondissement: | Arras |
| Canton: | Saint-Pol-sur-Ternoise |
| Insee: | 62740 |
| Postal Code: | 62550 |
| Mayor: | Pauline Boëte[1] |
| Term: | 2023 - 2026 |
| Intercommunality: | CC Ternois |
| Coordinates: | 50.4783°N 2.3572°W |
| Elevation M: | 165 |
| Elevation Min M: | 111 |
| Elevation Max M: | 186 |
| Area Km2: | 4.2 |
Sains-lès-Pernes (in French pronounced as /sɛ̃ lɛ pɛʁn/, literally Sains near Pernes) is a commune in the Pas-de-Calais department in the Hauts-de-France region of France.[2]
Sains-lès-Pernes is at the junction of the D70 and D71 roads, some 27miles northwest of Arras, close to the town of Pernes. It is the source of the river Clarence, at a place known as "Le Buich".