Al-Mutawakkil Ahmad (المتوكل أحمد) (26), (full name Ahmad bin Ali bin Abbas: أحمد بن علي بن عباس) September 1756 - 10 September 1816 was an Imam of Yemen who ruled in 1809–1816. He belonged to the Qasimid family, descendants of the Islamic prophet Muhammad, which dominated the Zaidi imamate of Yemen from 1597 to 1962.