Ubirajara is a municipality in the state of São Paulo in Brazil. The population is 4,804 (2020 est.) in an area of . The elevation is .
The municipality was created by state law in 1948.
The city was initially focused on the production of coffee beans, but successive issues with the good's price led them to shift towards the culture of rice, corn, beans, and cotton, as well as cattle raising.
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).