| Clermont-Dessous | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Clermont-Dessous (Lot-et-Garonne).svg |
| Arrondissement: | Agen |
| Canton: | Le Confluent |
| Insee: | 47066 |
| Postal Code: | 47130 |
| Mayor: | Jean-Pierre Causero[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Confluent et Coteaux de Prayssas |
| Coordinates: | 44.2394°N 0.4464°W |
| Elevation M: | 135 |
| Elevation Min M: | 30 |
| Elevation Max M: | 190 |
| Area Km2: | 15.08 |
Clermont-Dessous is a commune in the Lot-et-Garonne department in south-western France.
Clermont-Dessous was once a stronghold in Agenais to which the village of Fortic was later attached. The place was besieged in vain in 1221 by Amaury de Monfort, and was taken by routiers in 1457.
In the middle years of the nineteenth century, fairs were held on 7 March, 19 October and 13 December.
List of mayors since 1793:
The town hall is located at Fourtic, a village crossed by the road from Bordeaux to Toulouse.