| Bayenghem-lès-Seninghem | |
| Native Name: | Baaiengem |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason Bayenghem-lès-Seninghem.svg |
| Arrondissement: | Saint-Omer |
| Canton: | Lumbres |
| Insee: | 62088 |
| Postal Code: | 62380 |
| Mayor: | Jean-François Denecque[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Pays de Lumbres |
| Coordinates: | 50.7008°N 2.0775°W |
| Elevation M: | 64 |
| Elevation Min M: | 50 |
| Elevation Max M: | 170 |
| Area Km2: | 3.33 |
Bayenghem-lès-Seninghem (in French pronounced as /bajɑ̃ɡɑ̃ lɛ sənɛ̃ɡɑ̃/, literally Bayenghem near Seninghem;) is a commune in the Pas-de-Calais department in the Hauts-de-France region in northern France.
A village located 10 miles (16 km) southwest of Saint-Omer, on the D204 road, just off the N42.