Sofia University "St. Kliment Ohridski" is a public research university in Sofia, Bulgaria. It is the oldest institution of higher education in Bulgaria.

Clement or Kliment of Ohrid was one of the first medieval Bulgarian saints, scholar, writer, and apostle to the Slavs. He was one of the most prominent disciples of Cyril and Methodius and is often associated with the creation of the Glagolitic and Cyrillic scripts, especially their popularisation among Christianised Slavs. He was the founder of the Ohrid Literary School and is regarded as a patron of education and language by some Slavic people. He is considered to be the first bishop of the Bulgarian Orthodox Church, one of the Seven Apostles of Bulgarian Orthodox Church since the 10th century, and one of the premier saints of modern Bulgaria. The mission of Clement was the crucial factor which transformed the Slavs in then Kutmichevitsa into Bulgarians. Clement is also the patron saint of North Macedonia, the city of Ohrid and the Macedonian Orthodox Church.