Lake Iseo or Iseo lake, also known as Sebino, is the fourth largest lake in Lombardy, Italy, fed by the Oglio River.

Lombardy is an administrative region of Italy that covers 23,844 km2 (9,206 sq mi); it is located in northern Italy and has a population of about 10 million people, constituting more than one-sixth of Italy's population. Lombardy is located between the Alps mountain range and tributaries of the river Po, and includes Milan, its capital, the largest metropolitan area in the country, and among the largest in the EU.