Tayyar Mehmed Pasha (died 24 December 1638) was an Albanian Ottoman grand vizier.
After the death of Osman II, he joined the rebellious forces of Abaza Mehmet, but during the battle of Kayseri in 1624, he changed sides[1] and was appointed as the beylerbey (high governor) of Diyarbakır (in modern southeast Turkey).
The impatient sultan reprehended the Pasha, who was directing the siege cautiously to minimize losses.
After this incident, Tayyar Mehmed Pasha decided for a general attack and personally took part in the fighting on 24 December 1638 in the capture of Baghdad.
[3] The sultan expressed his sorrow, saying "O Tayyar, You are worth one hundred castles [cities] like Baghdad."