| Bucy-le-Long | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason Bucy-le-Long.svg |
| Arrondissement: | Soissons |
| Canton: | Fère-en-Tardenois |
| Insee: | 02131 |
| Postal Code: | 02880 |
| Mayor: | Thierry Routier[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Val de l'Aisne |
| Coordinates: | 49.3914°N 3.3947°W |
| Elevation M: | 49 |
| Elevation Min M: | 39 |
| Elevation Max M: | 161 |
| Area Km2: | 12.86 |
Bucy-le-Long (in French pronounced as /bysi lə lɔ̃/) is a commune in the department of Aisne in Hauts-de-France in northern France.