Bahram ibn Shahriyar (Persian: بهرام بن شهریار), was an Iranian prince from the Bavand dynasty.
In 1118, Ali I ascended the Bavandid throne, but was shortly imprisoned by the Seljuq Sultan Muhammad I, who wanted to have direct rule over Mazandaran.
Muhammad shortly died, and was succeeded by his son Mahmud II who released Ali from prison, gave him his aunt in marriage, and recognized him as the ruler of the Bavand dynasty.
Ali, however, disobeyed, and instead sent his son Shah Ghazi Rustam, who was also related to Ahmad Sanjar from his mother's side.
Bahram then fled to Ghiyath ad-Din Mas'ud, who had recently become the ruler of Gorgan and promised to aid him in his conquest of Mazandaran.