Juquiá is a municipality in the state of São Paulo in Brazil. The population is 18,718 (2020 est.) in an area of 813 km<sup>2</sup>. The elevation is 17 m.
The municipality was created by state law in 1948.
The municipality contains part of the Serra do Mar Environmental Protection Area, created in 1984.
In telecommunications, the city was 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).