The University of Belgrade (Serbian: Универзитет у Београду / Univerzitet u Beogradu) is a public research university in Belgrade, Serbia. It is the oldest and largest modern university in Serbia.

Founded in 1808 as the Belgrade Higher School in revolutionary Serbia, by 1838 it merged with the Kragujevac-based departments into a single university. The university has around 59,600 enrolled students and over 4,600 academic staff members. Since its founding, the university has educated more than 378,000 bachelors, around 25,100 magisters, 29,000 specialists and 14,670 doctors. The university comprises 31 faculties, 12 research institutes, the university library, and 9 university centres. The faculties are organized into four groups: social sciences and humanities; medical sciences; natural sciences and mathematics; and technological sciences.