The Jagiellonian University (Polish: Uniwersytet Jagielloński, UJ) is a public research university in Kraków, Poland. Founded in 1364 by King Casimir III the Great, it is the oldest university in Poland and one of the oldest universities in continuous operation in the world. The university grounds form part of the Kraków Old Town, a UNESCO World Heritage Site. The university has been viewed as a vanguard of Polish culture as well as a significant contributor to the intellectual heritage of Europe.
The campus of the Jagiellonian University is centrally located within the city of Kraków. The university consists of thirteen main faculties, in addition to three faculties composing the Collegium Medicum. It employs roughly 4,000 academics and provides education to more than 35,000 students who study in 166 fields. The main language of instruction is Polish, although around 30 degrees are offered in English and some in German. The university library and Collegium Novium house a significant number of medieval and Renaissance art pieces and manuscripts, including the landmark De revolutionibus orbium coelestium by the university alumnus Nicolaus Copernicus.