| Santa Maria do Herval | |
| Native Name: | Teewald (Hunsrick) |
| Official Name: | Municipality of Santa Maria do Herval |
| Settlement Type: | Municipality |
| Coordinates: | -29.4978°N -50.9928°W |
| Subdivision Type: | Country |
| Subdivision Name: |  Brazil |
| Subdivision Type1: | State |
| Subdivision Type2: | Mesoregion |
| Subdivision Type3: | Microregion |
| Leader Title: | Mayor |
| Established Title: | Founded |
| Total Type: | Total |
| Population Footnotes: | [1] |
| Population As Of: | 2020 |
| Population Total: | 6,364 |
| 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 |
Santa Maria do Herval (Hunsrick: Teewald) is a municipality in the state of Rio Grande do Sul, Brazil.
Santa Maria do Herval is one of 17 municipalities in Brazil where Hunsrick is an official language.