Yazid ibn Abd al-Malik ibn Marwan, commonly known as Yazid II, was the ninth Umayyad caliph, ruling from 720 until his death in 724. Although he lacked administrative or military experience, he derived prestige from his lineage, being a descendant of both ruling branches of the Umayyad dynasty, the Sufyanids who founded the Umayyad Caliphate in 661 and the Marwanids who succeeded them in 684. He was designated by his half-brother, Caliph Sulayman ibn Abd al-Malik, as second-in-line to the succession after their cousin Umar, as a compromise with the sons of Abd al-Malik.

The Umayyad Caliphate or Umayyad Empire was the second caliphate established after the death of the Islamic prophet Muhammad and was ruled by the Umayyad dynasty. Uthman ibn Affan, the third of the Rashidun caliphs, was also a member of the clan. The family established dynastic, hereditary rule with Mu'awiya I, the long-time governor of Greater Syria, who became caliph after the end of the First Fitna in 661. After Mu'awiya's death in 680, conflicts over the succession resulted in the Second Fitna, and power eventually fell to Marwan I, from another branch of the clan. Syria remained the Umayyads' main power base thereafter, with Damascus as their capital.