| Lieusaint | |
| Commune Status: | Commune |
| Coordinates: | 48.6333°N 2.55°W |
| Insee: | 77251 |
| Postal Code: | 77127 |
| Arrondissement: | Melun |
| Canton: | Combs-la-Ville |
| Mayor: | Michel Bisson[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CA Grand Paris Sud Seine-Essonne-Sénart |
| Elevation Min M: | 81 |
| Elevation Max M: | 91 |
| Area Km2: | 11.97 |
Lieusaint (pronounced as /fr/) is a commune in the Seine-et-Marne department in the Île-de-France region in north-central France.
The inhabitants are called the Lieusaintais.