| Region | Estrie |
|---|---|
| RCM | Le Granit |
| Constituted | February 25, 1998 |
| Mayor | Diane Roy |
| Federal riding | Beauce |
| Prov. riding | Beauce-Sud |
| Area total | 128.70 km² |
| Area land | 127.58 km² |
| Population total | 1074 |
| Population as of | 2021 |
| Population density | 8.4 km² |
| Pop 2016-2021 | 0.3% |
| Dwellings | 507 |
| Time zone | EST (UTC−5) |
| Time zone (DST) | EDT (UTC−4) |
| Postal code(s) | G0M 1W0 |
| Area code | 819 |
Saint-Ludger is a municipality in the Le Granit Regional County Municipality in Estrie, Quebec, Canada, on the Canada–United States border. The population is 1,074 as of 2021.
The municipality of Saint-Ludger was created in 1998 from the amalgamation of the village of Saint-Ludger, the municipality of Risborough and the township of Gayhurst-Partie-Sud-Est. The first settlers arrived in the area before 1863. It is named in honour of Ludger of Utrecht, the first bishop of Münster in the 9th century.