Île d'Oléron (English: Island of Oleron) is an island off the Atlantic coast of France (due west of Rochefort), on the southern side of the Pertuis d'Antioche strait. It is the second largest French island after Corsica (not counting French overseas possessions).
It was at Oléron in about 1152 to 1160 that Eleanor of Aquitaine introduced the first "maritime" or "admiralty" laws in that part of the world: the Rolls of Oleron. In 1306, Edward I of England granted the island to his son, Edward II, as part of the duchy of Aquitaine.
On March 20, 1586, the Island is taken by Agrippa d'Aubigne.
The island has an area of about 175km2. It is a fertile and well cultivated island on the Atlantic coast of France, that is on the bay of Biscay. The climate is generally mild (maritime temperate) with sufficient but not excessive rainfall, but with probably from 3 to 15 days of intense heat in the summer months of July and August, mostly grouped.
Administratively, the island belongs to the Charente-Maritime département, in the Poitou-Charentes région. The island is divided into 8 communes:
The island has about 19,000 inhabitants.
Since 1966, the island has been connected to the mainland by a road bridge. With a length of 3,027 m (9,931 ft), it is the longest bridge in France. It has been toll-free since 1991.
As a large Atlantic island only 3 kilometres off the Aquitanian coast of France, Oléron is a popular tourist destination. There are lovely beaches, surfing and horse-riding are catered for and there are many interesting old buildings.