Illyricum

Illyricum can refer to:

• Illyria, a region in the Balkans in classical antiquity, inhabited by ancient Illyrians
• Illyricum (Roman province), a Roman province that existed between 167 BC and 10 AD
• Diocese of Illyricum, a diocese of the Late Roman Empire
• Praetorian prefecture of Illyricum, one of four praetorian prefectures into which the Late Roman Empire was divided

Latin binomial abbreviations for species