Abu Kalijar Marzuban, also known as Samsam al-Dawla (c. 963 – December 998) was the Buyid amir of Iraq (983–987), as well as Fars and Kerman (988 or 989 – 998). He was the second son of 'Adud al-Dawla. The Abbasids recognized his succession and conferred upon him the title Samsam al-Dawla. He lacked the qualities of his father 'Adud al-Dawla and failed to have a grip upon his state affairs. His rule was marked by revolts and civil wars.