| Official Name: | Biritiba Mirim |
| Mapsize: | 250px |
| Pushpin Map: | Brazil |
| Subdivision Type: | Country |
| Subdivision Type1: | Region |
| Subdivision Type2: | State |
| Subdivision Name: |  Brazil |
| Subdivision Name1: | Southeast |
| Subdivision Type3: | Metropolitan Region |
| Subdivision Name3: | São Paulo |
| Leader Title: | Mayor |
| Leader Name: | Walter Hideki Tajiri (PTB) |
| Area Total Km2: | 317.41 |
| Population As Of: | 2020 [1] |
| Population Total: | 32,936 |
| Population Density Km2: | 86.77 |
| Timezone: | BRT |
| Utc Offset: | -3 |
| Coordinates: | -23.5728°N -46.0389°W |
| Blank Name: | HDI (2000) |
| Blank Info: | 0,750 – medium |
| Website: | Biritiba Mirim |
Biritiba Mirim is a Brazilian municipality of the state of São Paulo. It is part of the Metropolitan Region of São Paulo.[2] The population is 32,936 (2020 est.) in an area of 317.41 km².[3] Its limits are Guararema in the north, Salesópolis in the east, Bertioga to the south and Mogi das Cruzes in the west and northwest.
In telecommunications, the city was served by Companhia de Telecomunicações do Estado de São Paulo until 1973, when it began to be served by Companhia Telefônica da Borda do Campo. In July 1998, this company was acquired by Telefónica, which adopted the Vivo brand in 2012.
The company is currently an operator of cell phones, fixed lines, internet (fiber optics/4G) and television (satellite and cable).[4]