| Official Name: | São Miguel das Missões |
| Motto: | Patrimônio Histórico e Cultural da Humanidade (Historical and Cultural Heritage of Humanity) |
| Settlement Type: | Municipality |
| Pushpin Map: | Brazil |
| Pushpin Map Caption: | Location of São Miguel das Missões in Brazil |
| Coordinates: | -28.55°N -54.5528°W |
| Subdivision Type: | Country |
| Subdivision Type1: | Region |
| Subdivision Name1: | South |
| Subdivision Type2: | State |
| Subdivision Name2: | Rio Grande do Sul |
| Subdivision Type3: | Mesoregion |
| Subdivision Name3: | Riograndense Northwest |
| Subdivision Type4: | Microregion |
| Subdivision Name4: | Santo Ângelo |
| Subdivision Type5: | Metrop. region |
| Leader Party: | Hilário Casarin |
| Leader Title: | Mayor |
| Leader Name: | Mayor (prefeito) |
| Elevation M: | 305 |
| Area Total Km2: | 1246 |
| Population Total: | 7,683 |
| Population As Of: | 2020 [1] |
| Population Density Km2: | auto |
| Timezone1: | BRT |
| Utc Offset1: | -3 |
| Postal Code Type: | Postal code |
| Area Code Type: | Area code |
| Whs: | Ruins of São Miguel das Missões |
| Image Upright: | 1.23 |
| Part Of: | Jesuit Missions of the Guaranis |
| Criteria: | (iv) |
| Id: | 275bis-001 |
| Coordinates: | -28.5481°N -54.5556°W |
| Year: | 1983 |
| Extension: | 1984 |
São Miguel das Missões is a municipality in Rio Grande do Sul state, southern Brazil. Important 17th century Spanish Jesuit mission ruins are located in the municipality. San Miguel Mission is within Santo Ângelo Microregion, and the Riograndense Northwest Mesoregion. The city covers 1246km2 and had a population of 7,683 residents.
See also: Ruins of São Miguel das Missões. The town grew around the Spanish colonial Jesuit Reduction, Mission San Miguel Arcángel, founded in 1632. After becoming part of Brazil it was renamed Mission São Miguel das Missões.
In 1984 Mission São Miguel das Missões was one of four sites of Jesuit reductions in Argentina and one in Brazil to be declared by UNESCO the World Heritage Sites.
The Mission Museum is a history museum located in São Miguel Mission.
The creation of the museum was one of the first initiatives of the Office of Historical and Artistic Heritage, today IPHAN. In 1937 the SPHAN was created and in the same year, the architect Lucio Costa was sent to Rio Grande do Sul to analyze the remains of the ruins of the Seven Peoples of the Missions, and propose measures. One of his proposals was to create a museum to house the statues missionaries dispersed throughout the region. In 1938, the remnants of the town of San Miguel and the museum building were listed as National Heritage, and in 1940, the Museum of the Missions was officially established.
Between 1938 and 1940, the architect Lucas Mayerhofer directed the stabilization works in the mission Church of San Miguel, the construction of the museum building, and was in charge of gathering the works of statuary.
Currently listed in the museum's collection are religious images from the time of installation of the Jesuit missions in the region.