Adud al-Dawla Shir-Zad (Persian: عضدالدوله شیرزاد), better known as Shir-Zad (شیرزاد) was the sultan of the Ghaznavid Empire from 1115 to 1116. A son of Mas'ud III (r. 1099–1115), Shir-Zad served as a governor in India during his father's reign. The deputy governor of Shir-Zad was Qiwam al-Mulk Nizam al-Din. During his governorship, Shir-Zad became very close friends with the Persian poet Masud Sa'd Salman, who had recently been released from his imprisonment at Nay.^[1] In one of his poems, Masud Sa'd Salman makes mention of a certain Amir Kaykavus at Shir-Zad's court in the city of Lahore, which may been the Ziyarid ruler and author of the Qabus-Nama, Kaykavus.^[2]

It was probably at his accession that Shir-Zad adopted the laqab (honorific epithet) of Kamal al-Daula. He ruled for one year, until he was overthrown by his brother Arslan-Shah in February 1116. Shir-Zad fled to the Caspian lands, where he received shelter by the ispahbad (ruler) of the local Bavand dynasty of Tabaristan. With the help of the ispahbad, Shir-Zad made a pilgrimage to Mecca in April–May. After his return, Shir-Zad attempted to regain the throne from his brother, but was killed by the latter.^[3]

No coins of Shir-Zad are known, which implies he did not rule long enough to have them minted, or none minted by him have been found yet.^[4]