Hasan II (Persian: ), also known as Fakhr al-Dawla Hasan ( ), was the last ruler of the Bavand dynasty from 1334 until his murder in 1349. He was the brother and successor of Sharaf al-Muluk.

The Bavand dynasty (Persian: باوندیان) (also spelled Bavend), or simply the Bavandids, was an Iranian dynasty that ruled in parts of Tabaristan (present-day Mazandaran province) in what is now northern Iran from 651 until 1349, alternating between outright independence and submission as vassals to more powerful regional rulers.