OTRANTO. See HYDRUNTUM; and SICILIES, Tiro.
OTTAJANO, a town of the kingdom of the Two Sicilies, province of Naples, stands at the N.E. base of Mount Vesuvius, 12 miles E. of Naples. It has a castle standing on an eminence, and three churches. Agriculture is the chief occupation of the inhabitants. Pop. 14,000.