Sharwin III (Persian: شروین), was the fourteenth ruler of the Bavand dynasty briefly in 986.
In 986, after the death of Rustam II, Sharwin's brother al-Marzuban ascended the Bavandid throne.
There have been several confusions about the reign of the Bavandid kings after the death of Rustam II.
A certain Shahriyar III is later mentioned as the ruler of the Bavand dynasty in the following year.
This biography of an Iranian ruler or member of a royal family is a stub.