Berengar II was the King of Italy from 950 until his deposition in 961. He was a scion of the Anscarid and Unruoching dynasties, and was named after his maternal grandfather, Berengar I. He succeeded his father as Margrave of Ivrea around 923, and after 940 led the aristocratic opposition to kings Hugh and Lothair II. In 950 he succeeded the latter and had his son, Adalbert crowned as his co-ruler. In 952 he recognised the suzerainty of Otto I of Germany, but he later joined a revolt against him. In 960 he invaded the Papal States, and the next year his kingdom was conquered by Otto. Berengar remained at large until his surrender in 964. He died imprisoned in Germany two years later.

King of Italy was the title given to the ruler of the Kingdom of Italy after the fall of the Western Roman Empire. The first to take the title was Odoacer, a barbarian warlord, in the late 5th century, followed by the Ostrogothic kings up to the mid-6th century. With the Frankish conquest of Italy in the 8th century, the Carolingians assumed the title, which was maintained by subsequent Holy Roman Emperors throughout the Middle Ages. The last Emperor to claim the title was Charles V in the 16th century. During this period, the holders of the title were crowned with the Iron Crown of Lombardy.