Omar Tiberiades

Omar Tiberiades or Abū Ḥafṣ ʿUmar ibn al-Farrukhān al-Tabari (d. ca. 815), (Persian أبو حفص عمر بن الفرخان الطبري) was a Medieval Persian astrologer and architect from Tabaristan.

The historical Tabaristan region is in the present-day Mazandaran Province of northern Iran. He was part of a group of astrologers, including Naubakht, Mashallah ibn Athari and Muḥammad ibn Ibrāhīm al-Fazārī, who was asked by Caliph al-Mansur to choose a favorable time for the founding of Baghdad (July 30, 762). The last date in which at-Tabari is mentioned is the month of Shawwal 196 AH (from June 15 to July 13, 812), when he completed The Four Books (commentary to Ptolemy's Tetrabiblos).

Works Around the year 800, Tiberiades translated the Middle Persian version of the Pentateuch by Dorotheus of Sidon. He translated the five books into the Arabic language.

A Latin translation of his book was often quoted by Western astrologers.