Asfar ibn Kurduya (also spelled Kurdawayh, Kardawayh and Kurdawaih), was a Daylamite officer who served the Buyid dynasty.
Asfar is first mentioned during the reign of the Buyid ruler Adud al-Dawla, as one of the most prominent officers of the Empire.
However, Asfar quickly changed his mind, and declared allegiance to the latter's other brother Abu Nasr Firuz Kharshadh, who was shortly given the laqab of "Baha' al-Dawla."
However, Samsam al-Dawla, with the aid of Fuladh ibn Manadhar, suppressed the rebellion, and imprisoned Baha al-Dawla.
After this event, Asfar is no longer mentioned.