| Saint-Arnoult-des-Bois | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Saint-Arnoult-des-Bois (Eure-et-Loir).svg |
| Arrondissement: | Chartres |
| Canton: | Illiers-Combray |
| Insee: | 28324 |
| Postal Code: | 28190 |
| Mayor: | Bertrand de Lacheisserie[1] |
| Term: | 2023 - 2026 |
| Coordinates: | 48.4933°N 1.2639°W |
| Elevation M: | 188 |
| Elevation Min M: | 163 |
| Elevation Max M: | 247 |
| Area Km2: | 20.67 |
Saint-Arnoult-des-Bois (in French pronounced as /sɛ̃.t‿aʁnu de bwa/) is a commune in the Eure-et-Loir department in northern France.