The Aristotle University of Thessaloniki (AUTh; often called the Aristotelian University or University of Thessaloniki; Greek: Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης) is the sixth oldest and among the most highly ranked tertiary education institutions in Greece. It is named after the philosopher Aristotle, who was born in Stageira, about 55 km east of Thessaloniki.
It is the largest university in Greece and in the Balkans. Its campus covers 230,000 square metres in the centre ofThessaloniki, with additional educational and administrative facilities elsewhere
As of 2014, there is a student population of approximately 40,000 active students enrolled at the university (31,000 at the undergraduate level and 9,000 in postgraduate programmes of which 3,952 at Doctoral level) and 2,366 faculty members. There are additionally 248 members of the Special Laboratory Teaching Personnel, 213 members of the Special Technical Laboratory Personnel. The administrative staff consists of 400 permanent employees and 528subcontractor employees that are contracted by the university.
The language of instruction is Greek, although there are programs in foreign languages and courses for international students, which are carried out in English, French, German, and Italian.