| L'Islet | |
| Pushpin Map: | Canada Southern Quebec |
| Pushpin Map Caption: | Location in southern Quebec |
| Coordinates: | 47.1°N -91°W |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Type2: | Region |
| Subdivision Name2: | Chaudière-Appalaches |
| Subdivision Type3: | RCM |
| Subdivision Name3: | L'Islet |
| Established Title1: | Constituted |
| Established Date1: | January 1, 2000 |
| Leader Title: | Mayor |
| Leader Name: | André Caron |
| Leader Title1: | Federal riding |
| Leader Name1: | Montmagny—L'Islet— Kamouraska—Rivière- du-Loup |
| Leader Title2: | Prov. riding |
| Leader Name2: | Côte-du-Sud |
| Area Total Km2: | 176.30 |
| Area Land Km2: | 120.02 |
| Population Total: | 3999 |
| Population As Of: | 2011 |
| Population Density Km2: | 33.3 |
| Population Blank1 Title: | Pop 2006-2011 |
| Population Blank1: | 4.1% |
| Population Blank2 Title: | Dwellings |
| Population Blank2: | 1907 |
| Timezone: | EST |
| Utc Offset: | −5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | −4 |
| Postal Code Type: | Postal code(s) |
| Postal Code: | G0R 2C0 |
| Blank Name: | Highways |
| Blank Info: | |
| Area Code: | 418 and 581 |
L'Islet is a municipality within L'Islet Regional County Municipality in the Chaudière-Appalaches region of Quebec, Canada.
It is located on the south shore of the Saint Lawrence River halfway between Quebec City and Rivière-du-Loup. The Musée Maritime du Québec (Quebec Marine Museum) is located there on Route 132.
The current town of L'Islet was formed in 2000 with the merger of the former city of L'Islet, the municipality of L'Islet-sur-Mer, and the parish municipality of Saint-Eugène.
The municipality got its name from a small island in the river near the village of L'Islet-sur-Mer.
The Notre-Dame-de-Bonsecours church, built 1768, is classified as important historical building.
The town hosts many small events during the year such as the Festival Guitares en fête, La Parades des Berlots, and the L'Islet Car Show.
Local rivers include the: