Abū-Saʿīd Hasan ibn Bahrām Jannābī is the founder of the Qarmatian state in Al-Bahrayn, in the late 9th century CE.

He is a Persian from Jannāba (Ganaveh, currently in Bushehr province).

The exact date of his birth is not known.

He was born between 845 CE and 855 and died in 913 or 914.

In 900, he scores a major victory over an Abbasid army sent to subdue him, led by Al-'Abbas ibn 'Amr al-Ghanawi.

He is succeeded by his son Abū-Tāhir Al-Jannābī.