| Mas-de-Londres | |
| Commune Status: | Commune |
| Arrondissement: | Lodève |
| Canton: | Lodève |
| Insee: | 34152 |
| Postal Code: | 34380 |
| Mayor: | Robert Arnal[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 43.7822°N 3.7533°W |
| Elevation M: | 201 |
| Elevation Min M: | 167 |
| Elevation Max M: | 400 |
| Area Km2: | 19.06 |
Mas-de-Londres (in French pronounced as /ma(s) də lɔ̃dʁ/; Occitan (post 1500);: Lo Castèl) is a commune in the Hérault department in southern France.