| Dois Irmãos | |
| Official Name: | Municipality of Dois Irmãos |
| Settlement Type: | Municipality |
| Pushpin Map Caption: | Location in Brazil |
| Coordinates: | -29.58°N -51.085°W |
| Subdivision Type: | Country |
| Subdivision Name: |  Brazil |
| Subdivision Type1: | State |
| Subdivision Type2: | Mesoregion |
| Subdivision Type3: | Microregion |
| Leader Title: | Mayor |
| Leader Name: | Jerri Adriani Meneghetti |
| Leader Party: | PP |
| Established Title: | Founded |
| Established Date: | 29 September 1829 |
| Total Type: | Total |
| Area Total Km2: | 65.156 |
| Population Footnotes: | [1] |
| Population As Of: | 2020 |
| Population Total: | 33,119 |
| Population Density Km2: | auto |
| Postal Code Type: | Postal code |
| Area Code Type: | Area/distance code |
| Blank Name Sec1: | IBGE code |
| Timezone: | BRT |
| Utc Offset: | -3 |
| Blank Name: | HDI (2010) |
| Blank Info: | 0.743 – high[2] |
Dois Irmãos is a municipality in the state of Rio Grande do Sul, Brazil. Its original German name was Baumschneis.[3]
The Catholic subscription book club Minha Biblioteca Católica was created there.