| Cerquilho | |
| Settlement Type: | Municipality |
| Pushpin Map: | Brazil |
| Pushpin Map Caption: | Location in Brazil |
| Coordinates: | -23.165°N -47.7436°W |
| Subdivision Type: | Country |
| Subdivision Name: |  Brazil |
| Subdivision Type1: | Region |
| Subdivision Name1: | Southeast Brazil |
| Subdivision Type2: | State |
| Subdivision Name2: | São Paulo |
| Subdivision Type3: | Metropolitan Region |
| Subdivision Name3: | Sorocaba |
| Leader Title: | Prefect |
| Area Total Km2: | 127.80 |
| Elevation M: | 595 |
| Population Total: | 49,802 |
| Population As Of: | 2020 [1] |
| Population Density Km2: | auto |
| Timezone1: | BRT |
| Utc Offset1: | -3 |
| Postal Code Type: | Postal code |
| Area Code Type: | Phone code |
Cerquilho is a municipality in the state of São Paulo in Brazil. It is part of the Metropolitan Region of Sorocaba.[2] The population is 49,802 (2020 est.) in an area of 127.80 km².[3] The elevation is 595m.
The municipality was created by state law in 1948.[4]
In telecommunications, the city was served by Companhia Telefônica Brasileira until 1973, when it began to be served by Telecomunicações de São Paulo.[5] 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).[6]