Yassıada

Yassıada (Turkish: Flat Island), officially renamed Democracy and Freedom Island (Turkish: Demokrasi ve Özgürlükler Adası) in 2013, is one of the Princes' Islands in the Sea of Marmara, to the southeast of Istanbul. In Byzantine times, it was known as Plati (Greek: Πλάτη). It should not be confused with Yassi Ada, a different island in the Aegean Sea.

The island, which has an area of 45 acres (18 ha), is officially a neighbourhood of Adalar (Turkish: Islands) district of Istanbul Province, Turkey.