The definition of the term "villae" is a complex task. Although, in everyday adopted discussions it is defined as an economic country facility, „a farm“. They are built regularly in selected locations, fully adapted to the landscape in suitable deep coves or in elevated positions on the hill, with wide views of the surrounding terrain and driveways. With their military interventions in the First (229/228 BC) and Second (219 BC) Illyrian war, Romans gained the first positions on the Adriatic coast. The expansion of Roman power gradually led to the establishment of Illyricum as part of the administrative and political system of the Roman Empire. Julius Caesar received a status of proconsul of Illyricum and immediately began to pursue a policy of Romanization of the area by bringing Roman officials and merchants in the Adriatic starting a coastal trade. The Romanization of the Adriatic led to increasingly significant and extensive ventures in the construction of Roman villas and the exploitation of the conquered land. The Croatian islands are divided into the islands of the northern Adriatic, the central Adriatic and the southern Adriatic. In the area of Roman Istria and Dalmatia, in the Adriatic, there are many locations of villas, but very few of which are researched sites. This extremely interesting subject requires further and detailed research in order to create a general picture of the condition of Roman villas on islands of Eastern Adriatic.