| Castelsagrat | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason de la ville de Castelsagrat (Tarn-et-Garonne).svg |
| Arrondissement: | Castelsarrasin |
| Canton: | Valence |
| Insee: | 82032 |
| Postal Code: | 82400 |
| Mayor: | Francine Fillatre[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Deux Rives |
| Coordinates: | 44.185°N 0.9478°W |
| Elevation M: | 86 |
| Elevation Min M: | 69 |
| Elevation Max M: | 203 |
| Area Km2: | 22.5 |
Castelsagrat is a commune in the Tarn-et-Garonne department in the Occitanie region in southern France.
The Séoune forms most of the commune's northern border. The Barguelonne forms all of the commune's south-eastern border.