Favignana (anc. Aegusa or Aethusa, an important Roman naval station), an island of the Aegades group in the Mediterranean, 8 m. from the' X. W. coast of Sicily; pop. 4,000. It is about 5 m. long and from 2 to 3 m. broad. The surface is low, with the exception of a range of hills running through the centre, on the culminating summit of which is the castle of Santa Catarina. There is a good harbor on the E. side, on which stand the town and fortress of San Leonardo. San Giaeomo, the principal place, is on the X. coast. The island produces good wine and fruits, and has several quarries and extensive tunny and anchovy fisheries, in the produce of which, and in sheep, goats, poultry,etc., it has a flourishing export trade.