| Official Name: | Leesville, Connecticut |
| Settlement Type: | Unincorporated community |
| Pushpin Map: | Connecticut#USA |
| Pushpin Label: | Leesville |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Connecticut |
| Subdivision Type2: | County |
| Subdivision Name2: | Middlesex |
| Subdivision Type3: | Town |
| Subdivision Name3: | East Haddam |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 33 |
| Coordinates: | 41.5117°N -72.4811°W |
| Area Code: | 860 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 212495 |
Leesville is a village in the town of East Haddam, Middlesex County, Connecticut, United States, on Connecticut Route 151, north of the town center. It was originally named Lord's Mills after a local vegetable oil watermill, the first in Connecticut.[1]