| Saint-Ludger | |
| Settlement Type: | Municipality |
| Pushpin Map: | Canada Southern Quebec |
| Pushpin Map Caption: | Location in southern Quebec |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Type2: | Region |
| Subdivision Name2: | Estrie |
| Subdivision Type3: | RCM |
| Subdivision Name3: | Le Granit |
| Established Title1: | Constituted |
| Established Date1: | February 25, 1998 |
| Leader Title: | Mayor |
| Leader Name: | Diane Roy |
| Leader Title1: | Federal riding |
| Leader Name1: | Beauce |
| Leader Title2: | Prov. riding |
| Leader Name2: | Beauce-Sud |
| Area Total Km2: | 128.70 |
| Area Land Km2: | 127.58 |
| Population Total: | 1074 |
| Population As Of: | 2021 |
| Population Density Km2: | 8.4 |
| Population Blank1 Title: | Pop 2016-2021 |
| Population Blank1: | 0.3% |
| Population Blank2 Title: | Dwellings |
| Population Blank2: | 507 |
| Timezone: | EST |
| Utc Offset: | −5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | −4 |
| Postal Code Type: | Postal code(s) |
| Postal Code: | G0M 1W0 |
| Area Code: | 819 |
| Blank Name: | Highways |
Saint-Ludger is a municipality in the Le Granit Regional County Municipality in Estrie, Quebec, Canada, on the Canada–United States border. 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.