| La Vallée-au-Blé | |
| Commune Status: | Commune |
| Arrondissement: | Vervins |
| Canton: | Marle |
| Insee: | 02759 |
| Postal Code: | 02140 |
| Mayor: | Éric Lecompte[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Thiérache du Centre |
| Coordinates: | 49.8592°N 3.7897°W |
| Elevation M: | 173 |
| Elevation Min M: | 164 |
| Elevation Max M: | 186 |
| Area Km2: | 5.17 |
La Vallée-au-Blé (in French pronounced as /la vale o ble/) is a commune in the Aisne department in Hauts-de-France in northern France.