Not to be confused with Toronto, the largest city in Canada. For other uses, see Tarentum.Taranto is a coastal city in Puglia, Southern Italy. It is the capital of the Province of Taranto and is an important commercial port as well as the main Italian naval base.It is the third-largest continental city of Southern Italy: according to 2011 population census, it has a population of 200,154.Taranto is an important commercial and military port. It has well-developed steel and iron foundries, oil refineries, chemical works, some shipyards for building warships, and food-processing factories.