ʿAlī ibn ʾAbū'l-Hayjāʾ ʿAbdallāh ibn Ḥamdān ibn Ḥamdūn ibn al-Ḥārith al-Taghlibī, more commonly known simply by his honorific of Sayf al-Dawla, was the founder of the Emirate of Aleppo, encompassing most of northern Syria and parts of the western Jazira.

Aleppo is a city in Syria, which serves as the capital of the Aleppo Governorate, the most populous governorate of Syria. With an estimated population of 2,098,000 residents as of 2021, it was Syria's largest city until its population was surpassed by Damascus, the capital of Syria, the largest in Syria's northern governorates and also one of the largest cities in the Levant region.