Type Anonymous society
Founded 1974
Headquarters Santana, Southern Cross Republic
Key people Cecília Guedes, CEO
Industry Oil and gas
Products Petroleum and its derivatives, natural gas, lubricant, petrochemical, fertilizer
Owner(s) State (65%)
Employees 10,595 (2010)

Petróleo do Cruzeiro do Sul S.A. or PetroCS (IPA: ˌpɛtɾoˈks) was founded in 1974 as a semi-public South Crossic national energy corporation headquartered in Santana, Southern Cross Republic. The Government of the Southern Cross Republic is the largest shareholder in PetroCS with 65% of the shares. The ownership interest is managed by the South Crossic Ministry of Mines and Energy.