Peristera (, feminine form of pigeon), also Aspro, locally Xero (meaning dry), Eudemia in antiquity, is a Greek island in the Sporades, in the Aegean Sea. It is administratively part of the municipality of Alonnisos and is also directly east of the namesake island. , the resident population of the island was 30. Peristera is in Zone B of the Alonnisos Marine Park. The Peristera shipwreck, a 5th-century BC merchant vessel, is located off Peristera.

Nearest islands and islets

Its nearest islands and islets are Alonnisos to the north and west and Adelfoi Islets to the west.