| Marignac-Lasclares | |
| Commune Status: | Commune |
| Arrondissement: | Muret |
| Canton: | Cazères |
| Insee: | 31317 |
| Postal Code: | 31430 |
| Mayor: | Anicet Agboton[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 43.3069°N 1.0992°W |
| Elevation M: | 300 |
| Elevation Min M: | 231 |
| Elevation Max M: | 310 |
| Area Km2: | 10.01 |
Marignac-Lasclares (in French pronounced as /maʁiɲak lasklaʁ/; Occitan (post 1500);: Marinhac e las Claras) is a commune in the Haute-Garonne department in southwestern France.
The commune is bordered by four other communes: Gratens to the north, Le Fousseret to the west and southwest, Lafitte-Vigordane across the river Louge to the east, and finally by Saint-Élix-le-Château across the river Louge to the southeast.
The river Louge flows in the commune, forms a border between Lafitte-Vigordane and Saint-Élix-le-Château.