Turmalina is a municipality in the state of São Paulo in Brazil. The population in 2020 was 1,696 and the area is . The elevation is 467 m.
The municipality contains part of the Acauã Ecological Station, a fully protected conservation unit created in 1974.
In telecommunications, the city was served by until 1973, when it began to be served by . 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).