Tathi bin Istin was a writer and chief of the Writers Bureau. He lived during the early periods of Islam under the rule of the Umayyad Caliphate, during which time he worked as the private writer of the Umayyad Caliph Hisham bin Abd El-Malik bin Marwan (723 – 743 AD). The Caliph later appointed him to the position bureau chief for the city of Homs.