| São Tiago | |
| Settlement Type: | Municipality |
| Official Name: | Municipality of São Tiago |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | Region |
| Subdivision Type3: | Intermediate Region |
| Subdivision Type4: | Immediate Region |
| Subdivision Name: |  Brazil |
| Subdivision Name2: | Southeast |
| Subdivision Name3: | Barbacena |
| Subdivision Name4: | São João del-Rei |
| Established Title: | Founded |
| Established Date: | 1 January 1949 |
| Leader Title: | Mayor |
| Leader Name: | Alexandre Nonato Almeida Vivas |
| Leader Party: | PATRI |
| Area Note: | [1] |
| Area Total Km2: | 572.400 |
| Elevation M: | 1,053 |
| Elevation Footnotes: | [2] |
| Population As Of: | 2021 |
| Population Total: | 10,979 |
| Population Density Km2: | auto |
| Population Demonym: | são-tiaguense |
| Timezone: | BRT |
| Utc Offset: | -3 |
| Postal Code Type: | Postal Code |
| Postal Code: | 36350-000 to 36359-999 |
| Blank Name: | HDI (2010) |
| Blank Info: | 0.662 – medium[3] |
São Tiago is a Brazilian municipality in the state of Minas Gerais. As of 2020 its population is estimated to be 10,960.[4]
The municipality belongs to the Immediate Geographic Region of São João del-Rei, in the Intermediate Geographic Region of Barbacena.
The municipality is part of the Roman Catholic Diocese of Oliveira.