Isma'il ibn Ahmad (d. November 907) was the Samanid amir of Transoxiana (892-907) and Khorasan (900-907). His reign saw the emergence of the Samanids as a powerful force. He was the son of Ahmad ibn Asad and a descendant of Saman Khuda, the founder of the Samanid dynasty who renounced Zoroastrianism and embraced Islam.