Abu Jafar Omar ibn Farkhan Tabari Saravi is a scientist, translator and astronomer of the 2nd century AH. He had a special position and dignity in the court of the Caliphate during the Abbasid period. During the Barmakian ministry, he was summoned to Baghdad for the first time. It is said that Ibn Farkhan was one of the architects who designed the city of Baghdad in 145 AH. In his book "History of Islamic Civilization", Jurji Zaydan considers him one of the greatest and most prolific translators of that period. This prominent scientist passed away around 200 AH.