Pedro Osório is a Brazilian municipality in the southeastern part of the state of Rio Grande do Sul. The population is 7,706 (2020 est.) in an area of 608.79 km².^[2] The municipality was founded on April 3, 1958 from parts of the municipalities of Canguçú and Arroio Grande. Cerrito was separated in 1997.^[3]

The municipality is by the Piratini River. Its population is largely of Italian and Lebanese descent.

• Arroio Grande
• Cerrito
• Herval
• Pelotas
• Piratini

• List of municipalities in Rio Grande do Sul

• Official website of the prefecture
• http://www.citybrazil.com.br/rs/pedroosorio/ (in Portuguese)