Pedro Francisco Callisaya Aro is a Bolivian academic, constitutional lawyer, and jurist serving as the sixth ombudsman of Bolivia since 2022. Callisaya developed his career in academic circles, completing multiple graduate and postgraduate courses in the fields of constitutional law and human rights. After exercising a couple of minor public posts in the late 1990s, Callisaya entered the Ombudsman's Office, where he worked for over a decade. He served for two terms on the Departmental Court of Justice of La Paz from 2012 to 2016 and 2017 to 2021.

The Ombudsman's Office of Bolivia is an independent governmental institution established by the Constitution, charged with overseeing the fulfillment, protection, and promotion of human rights in the country. The Ombudsman's Office is functionally, financially, and administratively independent of the four branches of Bolivian government. It was established on 22 December 1997 by Law N° 1818, and is currently regulated by Law N° 870 of 13 December 2016. Governance scholar Tom Pegram writes that "the Bolivian Ombudsman's Office has been recognized as arguably the most effective state actor in terms of advancing rights and active citizenship".