| Cacouna | |
| Settlement Type: | First Nations reserve |
| Pushpin Map: | Canada Quebec |
| Pushpin Mapsize: | 197 |
| Coordinates: | 47.9167°N -100°W |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Type2: | Region |
| Subdivision Name2: | Bas-Saint-Laurent |
| Subdivision Type3: | RCM |
| Subdivision Name3: | None |
| Established Title1: | Constituted |
| Established Date1: | unspecified |
| Leader Title1: | Federal riding |
| Leader Name1: | Montmagny—L'Islet—Kamouraska—Rivière-du-Loup |
| Leader Title2: | Prov. riding |
| Leader Name2: | Rivière-du-Loup-Témiscouata |
| Area Total Km2: | 0.00 |
| Timezone: | EST |
| Utc Offset: | −5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | −4 |
Cacouna is a Maliseet First Nations reserve in Quebec, physically located within the Rivière-du-Loup Regional County Municipality (though not juridically part of it). It is surrounded by the city of the same name.
It is the smallest reserve in Canada, with an area of only 0.17 hectares (0.42 acres, or 18,300 square feet). It is not permanently inhabited.[1]