| Official Name: | San Bernardo |
| Settlement Type: | Town |
| Pushpin Map: | Argentina |
| Pushpin Label Position: | bottom |
| Pushpin Map Caption: | Location in Argentina |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | Chaco |
| Subdivision Type2: | Department |
| Subdivision Name2: | O'Higgins |
| Subdivision Type3: | 2nd level Municipality |
| Subdivision Name3: | San Bernardo |
| Established Title: | Founded |
| Established Date: | June 28, 1933 |
| Population As Of: | |
| Population Total: | 11,101 |
| Coordinates: | -27.2667°N -102°W |
| Elevation M: | 79 |
| Postal Code Type: | CPA Base |
| Postal Code: | H 3701 |
| Area Code: | +54 3735 |
| Timezone: | ART |
| Utc Offset: | -3 |
| Blank Name: | Climate |
| Blank Info: | Cfa |
San Bernardo is a town in Chaco Province, Argentina. It is the head town of the O'Higgins Department.
The local economy is based on agriculture and forestry, the main produce being cotton, soya, sunflowers and wheat.