Bom Retiro do Sul | |
|---|---|
 Flag  Seal | |
 Location within Rio Grande do Sul | |
  Bom Retiro do Sul Location in Brazil | |
| Coordinates: 29°37′S 51°56′W / 29.617°S 51.933°W | |
| Country |  Brazil |
| State | Rio Grande do Sul |
| Population (2020 [1]) | |
| • Total | 12,390 |
| Time zone | UTC−3 (BRT) |
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Bom Retiro do Sul is a municipality in the state of Rio Grande do Sul, Brazil.