Abu Shuja (Persian: ابو شجاع‎‎; 993 – December 1024), better known by his laqab of Sultan al-Dawla (Persian: سلطان الدوله, "Power of the Dynasty"), was the Buyid amir of Fars (1012–1024) and Iraq (1012–1021). He was the son of Baha' al-Dawla.

Abu Shuja lived in Baghdad during his youth. Shortly before Baha' al-Dawla's death, he named Abu Shuja as his successor. Upon succeeding his father, he took the title Sultan al-Dawla wa 'Izz al-Milla ("Power of the Dynasty and Glory of the Community"). Travelling to his father's capital in Shiraz, he did seek for the traditional investiture by the Abbasid caliph, but instead had the required materials sent to him. He entrusted his oldest brothers Jalal al-Dawla and Qawam al-Dawla with the governorships of Basra and Kerman, respectively. He stayed in Persia for a long time; when he returned to Iraq three years later, he only went to Ahvaz to meet with his governor.

In 1018 Sultan al-Dawla again came to Iraq, in an attempt to maintain friendly terms with the neighboring Amirate of Mosul. Qawam al-Dawla, taking advantage of his brother's presence in the west, invaded Fars with the support of the Ghaznavids. The attack failed, Qawam al-Dawla's marked the division of the Buyid state. After repulsing Qawam al-Dawla's attack, Sultan al-Dawla returned to Iraq in order to solidify his rule there. The marchlands of the region, which had long resisted Buyid authority, were finally subjugated.

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