The Peru–Bolivian Confederation (or Confederacy) was a short-lived confederate state that existed in South America between 1836 and 1839. Its first and only head of state, titled “Supreme Protector”, was the Bolivian president, Marshal Andrés de Santa Cruz.
The confederation was a loose union between the states of Peru (by this time divided into a Republic of North Peru and a Republic of South Peru, which included the capital Tacna) and Bolivia.