Yezid b. Abdülmelik is the 9th Khalifa of the Emevi dynasty after Ömer b. Abdülaziz. His term of power is between the years 720-724. He became heir to the throne with the legacy of his father, Abdülmelik b. Mervan (5th Emevi Khalifa), but many people did not see him appropriate to the crown. There are too many negative commitments about his administration and personality while there are very few positive ones. He followed peaceful and neutral politics of Ömer b. Abdulaziz in the domestic politics for a short time, but then he gave up. Domestic conflicts were again flamed because of his sided administration; this situation clearly became one of the reasons of the collapse of Emevi dynasty. During his term of power, he was criticized as being too much interested in entertainment, poetry and music and as not giving enough importance to the state administration. There was an attempt to coup d'etat against him. Although he governed the country with daily simple actions, the claims that he fully left the state administration due to the entertainment are really wrong. Negative applications against Christians, taxing again non-Arab Muslims, hostile attitudes against Mühellebiler family who served devotedly to the Emevi State from the beginning are such applications to which many people negatively reacted. In foreign policy, he did not have his own line, he followed traditional conquest policy. In the time of Yezid, beside several defeats, he got some small successes. He died in 105/724.