| Province: | QC |
| Type: | QC |
| Route: | 273 |
| Map: | Route 273-QC.png |
| Length Km: | 21 |
| Length Round: | 1 |
| Length Ref: | [1] |
| Direction A: | North |
| Direction B: | South |
| Terminus A: | in Saint-Antoine-de-Tilly |
| Terminus B: | near Saint-Gilles |
| Previous Type: | QC |
| Previous Route: | 271 |
| Next Type: | QC |
| Next Route: | 275 |
| Cities: | Saint-Apollinaire, Saint-Antoine-de-Tilly |
| Junction: |
|
Route 273 is a short 21 km long, two-lane north–south highway on the south shore of the Saint Lawrence River in Quebec, Canada. Its northern terminus is in Saint-Antoine-de-Tilly at the junction of Route 132, and the southern terminus is at the junction of Route 269 near Saint-Gilles.