| Old Fort | |
| Settlement Type: | Unconstituted locality |
| Pushpin Map: | Canada Quebec |
| Pushpin Mapsize: | 197 |
| Coordinates: | 51.4236°N -57.8244°W |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Type2: | Region |
| Subdivision Name2: | Côte-Nord |
| Subdivision Type3: | RCM |
| Subdivision Name3: | Le Golfe-du-Saint-Laurent |
| Subdivision Type4: | Municipality |
| Subdivision Name4: | Bonne-Espérance |
| Leader Title1: | Federal riding |
| Leader Name1: | Manicouagan |
| Leader Title2: | Prov. riding |
| Leader Name2: | Duplessis |
| Area Land Km2: | 3.01 |
| Population Total: | 256 |
| Population As Of: | 2021 |
| Population Density Km2: | 92.7 |
| Population Blank1 Title: | Change (2006–11) |
| Population Blank1: | 14.9% |
| Population Blank2 Title: | Dwellings |
| Population Blank2: | 119 |
| Timezone: | AST |
| Utc Offset: | -4 |
| Postal Code Type: | Postal code(s) |
| Postal Code: | G0G 2G0 |
| Area Code: | 418 and 581 |
| Blank Name: | Highways |
Vieux Fort (also known as Old Fort) is an unconstituted locality within the municipality of Bonne-Espérance in the Côte-Nord region of Quebec, Canada. It is also known as Old Fort Bay or Vieux-Fort (the latter is preferred by the Commission de toponymie du Québec).
In the 2021 Census of Population conducted by Statistics Canada, Old Fort had a population of 256 living in 106 of its 113 total private dwellings, a change of from its 2016 population of 234. With a land area of, it had a population density of in 2021.[1]
Commission scolaire du Littoral operates Mountain Ridge School (anglophone) in Old Fort.[2]