Abdullah Khan (Abdollah Khan Ozbeg) (1533/4–1598), known as "The old Khan", was an Uzbek/Turkoman ruler of the Khanate of Bukhara (1500–1785). He was the last Shaybanid Dynasty Khan of Bukhara, from 1583 until his death.The main war he initiated, with the invasion of Persia, lasted from 1587 to 1598.