Alto Alegre (Portuguese: [ˈaw.tu aˈlɛ.ɡɾi] ^ⓘ) is a municipality in the Brazilian state of São Paulo. The population is 4,088 (2020 est.) in an area of 319 km².^[2] The municipality comprises the main town and the districts of Jatobá and São Martinho d'Oeste.

The District of Alto Alegre was created by State Decree-Law No. 6,713 on September 29, 1934, and was subordinated to the municipality of Penápolis. It was elevated to the status of a municipality by State Law No. 2,456 on December 30, 1953, separating it from Penápolis. At the time, it consisted of two districts: Alto Alegre and São Martinho d'Oeste. In 1960, the district of Jatobá was added.

Alto Alegre is located at a latitude of 21º34' South and a longitude of 50º09' West. Its estimated population in 2017 was 4,154 inhabitants, and the 2010 census recorded a population of 4,102 inhabitants.^[3]

The municipality has an area of 318.216 km². With over 4,000 inhabitants, the city is located approximately 23 kilometers from Penápolis, accessible via the Raul Forchero Casasco Highway. The territorial area is 310 km². Alto Alegre borders Penápolis to the north, Luiziânia to the southwest, Promissão to the east, Getulina to the south, and Braúna to the west.

• Feio River (also known as Aguapeí River)

• SP-419

• Mayor: Carlos Sussumi Ivama (2021–2024)
• Vice-Mayor: Adhemar Martins Flores

In telecommunications, the city was served by Companhia Telefônica Brasileira until 1973, when it began to be served by Telecomunicações de São Paulo.^[4] In July 1998, this company was acquired by Telefónica, which adopted the Vivo brand in 2012.^[5]

The company is currently an operator of cell phones, fixed lines, internet (fiber optics/4G) and television (satellite and cable).^[5]

• List of municipalities in São Paulo
• Interior of São Paulo