Coordinates: 6°28′8″N 3°22′49″E / 6.46889°N 3.38028°E
Iddo Island is a district in Lagos Mainland LGA of Lagos. Opposite Lagos Island LGA, Iddo used to be an island, but due to landfill, is now part of the rest of Lagos Mainland. Iddo Island is connected to Lagos Island by the Eko Bridge and the Carter Bridge.
Lagos was annexed by the Oba of Benin in the sixteenth century on the site of an earlier Yoruba settlement, and was known as Eko. The rulers of Lagos since then have all descended from the Benin warrior Ashipa who was the first Governor of the town, while the land owning aristocracy (Idejo) are Yoruba who trace their lineage to Chief Olofin. Ashipa's son, Ado, built his palace on Lagos Island, and his grandson moved the seat of government to the palace from Iddo island. The current ruler of Iddo, Oba Oyekan, is the biracial son of the late Oba Adeyinka Oyekan of Lagos.