| São Brás | |
| Settlement Type: | Municipality of Alagoas, Brazil |
| Image Alt: | Aerial view of downtown São Brás |
| Map Alt: | Location of São Brás in Alagoas |
| Shield Alt: | Coat of arms of São Brás |
| Etymology: | In English "Saint Blaise", named after the parish's patron saint |
| Pushpin Map: | Brazil#South America |
| Pushpin Relief: | yes |
| Coordinates: | -10.1278°N -36.9006°W |
| Subdivision Type: | Country |
| Subdivision Name: |  Brazil |
| Subdivision Type1: | Region |
| Subdivision Type2: | State |
| Subdivision Name1: | Northeast |
| Established Title: | Founded |
| Established Date: | 16 September 1935[1] |
| Leader Title1: | Mayor |
| Leader Name1: | Klinger Quirino Santos (MDB) (2021-2024)[2] |
| Leader Title2: | Vice Mayor |
| Leader Name2: | Genilson dos Santos Tavares (PTB) (2021-2024) |
| Area Total Km2: | 139.038 |
| Elevation M: | 25 |
| Population As Of: | 2022 |
| Population Total: | 6555[3] |
| Population Density Km2: | 47.15 |
| Population Demonym: | São-braense (Brazilian Portuguese) |
| Timezone: | Brasília Time |
| Utc Offset: | -03:00 |
| Postal Code Type: | Postal code |
| Postal Code: | 57380-000[4] |
| Blank Name: | HDI (2010) |
| Blank Info: | 0.572 – medium |
| Website: | saobras.al.gov.br |
São Brás is a municipality located in the Brazilian state of Alagoas. Its population was 6,969 (2020)[5] and its area is 140 km².[6]