| Saint-Rosaire | |
| Settlement Type: | Parish municipality |
| Image Blank Emblem: | Saint-Rosaire logo.png |
| Blank Emblem Size: | 100px |
| Pushpin Map: | Canada Southern Quebec |
| Pushpin Map Caption: | Location in southern Quebec. |
| Coordinates: | 46.1667°N -74°W |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Type2: | Region |
| Subdivision Name2: | Centre-du-Québec |
| Subdivision Type3: | RCM |
| Subdivision Name3: | Arthabaska |
| Established Title1: | Constituted |
| Established Date1: | May 23, 1896 |
| Leader Title: | Mayor |
| Leader Name: | Harold Poisson |
| Leader Title1: | Federal riding |
| Leader Name1: | Richmond—Arthabaska |
| Leader Title2: | Prov. riding |
| Leader Name2: | Arthabaska |
| Area Total Km2: | 109.80 |
| Area Land Km2: | 109.53 |
| Population Total: | 932 |
| Population As Of: | 2021 |
| Population Density Km2: | 8.5 |
| Population Blank1 Title: | Pop 2016-2021 |
| Population Blank1: | 10.6% |
| Timezone: | EST |
| Utc Offset: | −5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | −4 |
| Postal Code Type: | Postal code(s) |
| Postal Code: | G0Z 1K0 |
| Area Code: | 819 |
| Blank Name: | Highways |
Saint-Rosaire is a parish municipality located in the Centre-du-Québec region of Quebec, Canada.
In the 2021 Census of Population conducted by Statistics Canada, Saint-Rosaire had a population of living in of its total private dwellings, a change of from its 2016 population of . With a land area of 109.53km2, it had a population density of in 2021.[1]