Gien, a town of France, in the department of Loiret, on the right bank of the Loire, crossed here by a fine stone bridge of 12 arches, 38 m. S. E. of Orleans; pop. in I866, 6,717. It is built on a hill, and has an ancient castle, now used for public offices. The lower part of the town is often overflowed by the rising of the Loire. Pottery, leather, and fine carriages are manufactured, and there is a trade in wine, wool, saffron, coal, etc. Gien is first mentioned at the close of the 8th century as the site of a castle built by Charlemagne. The castle was restored and enlarged in 1494 by Anne of Beaujeu, daughter of Louis XI.