| Santa Maria do Boiaçu | |
| Pushpin Map: | Roraima#Brazil |
| Pushpin Map Caption: | Location in Brazil |
| Pushpin Label Position: | top |
| Subdivision Type: | Country |
| Subdivision Name: |  Brazil |
| Subdivision Type1: | Region |
| Subdivision Name1: | North |
| Subdivision Type2: | State |
| Subdivision Name2: | Roraima |
| Subdivision Type3: | Municipality |
| Subdivision Name3: | Rorainópolis |
| Population As Of: | 2010 |
| Population Footnotes: | [1] |
| Population Total: | 224 |
| Population Density Km2: | auto |
| Coordinates: | -0.5218°N -61.783°W |
| Utc Offset: | -4 |
Santa Maria do Boiaçu is a village in the Brazilian municipality of Rorainópolis, in the state of Roraima. It is located on the Branco River, and inside the Baixo Rio Branco-Jauaperi Extractive Reserve.[2]
Santa Maria do Boiaçu is an isolated village along the Branco River. Except for Santa Maria and a few riverside settlements, the region is uninhabited.[3] In 2018, the Baixo Rio Branco-Jauaperi Extractive Reserve was created which aims to protect the area while allowing for sustainable economic activities for the communities along the river.[4] Between 1960 and 1982, it was a of Caracaraí,[5] but has become part of the municipality of Rorainópolis.[6]
Santa Maria do Boiaçu has an airfield, an elementary school, the only high school in the region, and is connected to the telephone network and internet. The village has a medical post was which renovated in 2017.[6]
The 2019 cutbacks and restructuring of FUNAI, the organisation in charge of the indigenous territories, by Jair Bolsonaro[7] has resulted in Yanomami Amerindians leaving their territory and building camps in the vicinity of the village.[2]
The highway was supposed to connect Santa Maria do Boiaçu with the road network of Roraima, however as of 2020 only 45.6 kilometres of the planned 125 kilometres have been constructed.[8]