The National and Kapodistrian University of Athens (NKUA; Greek: Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών, Ethnikó ke Kapodistriakó Panepistímio Athinón), usually referred to simply as the University of Athens (UoA), is a public university in Athens, Greece.
It has been in continuous operation since its establishment in 1837 and is the oldest higher education institution of the modern Greek state and the first contemporary university in both the Balkan Peninsula and the Eastern Mediterranean. Today it is one of the largest universities by enrollment in Europe, with over 69,000 registered students.
The National and Kapodistrian University of Athens is an integral part of the modern Greek academic and intellectual tradition.
Research in the University of Athens includes almost all research interests. Such research in the university is associated with that conducted by the hospitals and research institutes of the metropolitan area, including the National Research Center for Physical Sciences "Demokritos", the National Hellenic Research Foundation (EIE), the National Research Center for Physical Sciences "Demokritos", the National Hellenic Research Foundation (EIE), the National Observatory of Athens, the Hellenic Pasteur Institute, the Biomedical Sciences Research Center (BSRC) "Alexander Fleming", the Athens High Performance Computing Laboratory, the National Centre for Marine Research (NCMR) and the Foundation for Biomedical Research of the Academy of Athens (BRFAA).
Research conducted in the institutes of the metropolitan area of Athens accounted for more than 50% of the ISI-indexed scientific publications coming from Greece. The Department of Informatics and Telecommunications has been ranked continuously among the 100 most important research institutes in the field of Computer Science, according to the Academic Ranking of World Universities (ARWU).