Abu Muḥammad al-Ḥasan ibn ‘Alī ibn al-Ḥasan ibn ‘Alī ibn ‘Umar al-Ashraf ibn ‘Alī Zayn al-‘Ābidīn (Medina, ca.

844 – Amul, January/February 917), better known as al-Ḥasan al-Uṭrūsh ("the Deaf"), is an Alid Shia missionary of the Zaydi sect who re-establishes Zaydid rule over the province Tabaristan in northern Iran in 914, after fourteen years of Samanid rule.

He ruled Tabaristan until his death under the regnal name of al-Nāṣir li'l-Ḥaqq ("Defender of the True Faith"), and becomes known as al-Nāṣir al-Kabīr ("al-Nasir the Elder") to distinguish him from his descendants who bear the same surname.

He is still known and recognized as Imam among the Zaydis of Yemen.