伊亚罗斯岛是希腊的岛屿，位于安德罗斯岛和蒂诺斯岛之间的爱琴海，由南爱琴大区负责管辖，属于基克拉泽斯群岛的一部分，长8.5公里、宽4.5公里，面积19平方公里，最高点海拔高度490米，岛上无人居住。

Gyaros (Greek:Γυάρος pronounced [ˈʝaɾos]), also locally known as Gioura (Greek:Γιούρα, unrelated to Gioura of Thessaly, also unpopulated), is an arid and unpopulated Greek island in the northern Cyclades near the islands of Andros and Tinos, with an area of 23 square kilometres (9 sq mi). It is a part of the municipality of Ano Syros, which lies primarily on the island of Syros. This and other small islands of the Aegean Sea served as places of exile for important persons in the early Roman empire. The extremity of its desolation was proverbial among Roman authors, such as Tacitus and Juvenal. It was a place of exile for leftist political dissidents in Greece from 1948 until 1974. At least 22,000 people were exiled or imprisoned on the island during that time.