| Sos | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Sos (Lot-et-Garonne).svg |
| Arrondissement: | Nérac |
| Canton: | L'Albret |
| Insee: | 47302 |
| Postal Code: | 47170 |
| Mayor: | Didier Soubiron[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Albret Communauté |
| Coordinates: | 44.0433°N 0.1411°W |
| Elevation M: | 132 |
| Elevation Min M: | 63 |
| Elevation Max M: | 162 |
| Area Km2: | 52.89 |
Sos (in French pronounced as /sɔs/; Gascon: Sòs or Sòç) is a commune in the Lot-et-Garonne department in south-western France.