Saaremaa (Danish: Øsel; German: Ösel; Swedish: Ösel; Latvian: Sāmsala; Polish: Serama) is the largest island in Estonia, measuring 2,673 km². The main island of Saare County, it is located in the Baltic Sea, south of Hiiumaa island, and belongs to the West Estonian Archipelago. The capital of the island is Kuressaare, which has about 15,000 inhabitants; the whole island has over 39,000 inhabitants.
The island is called Saaremaa in Estonian, and in Finnish Saarenmaa — literally "isle's land". In old Scandinavian sagas, Saaremaa is called Eysysla and in the Icelandic Sagas Eysýsla, which means exactly the same as the name of the island in Estonian: "the district (land) of island". This is the origin of the island's name in Danish Øsel, German and Swedish, Ösel, Gutnish Oysl, and in Latin, Osilia. The name Eysysla appears sometimes together with Adalsysla, "the big land", perhaps 'Suuremaa' or 'Suur Maa' in Estonian, which refers to mainland Estonia. In Latvian, the island is called Sāmsala, which means "the island of Saami".