| Duplessis | |
| Settlement Type: | Unincorporated community |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Louisiana |
| Subdivision Type2: | Parish |
| Subdivision Name2: | Ascension |
| Pushpin Map: | Louisiana |
| Pushpin Map Caption: | Location of Duplessis in Louisiana |
| Coordinates: | 30.2697°N -90.9383°W |
| Elevation Ft: | 16 |
| Population Density Km2: | auto |
| Timezone1: | CST |
| Utc Offset1: | -6 |
| Timezone1 Dst: | CDT |
| Utc Offset1 Dst: | -5 |
| Postal Code Type: | ZIP code |
| Postal Code: | 70728[1] |
| Area Code: | 225 |
Duplessis is an unincorporated community located in Ascension Parish, Louisiana, United States, which is located north of Gonzales.