The Talmudic academies in Babylonia, also known as the Geonic academies, were the center for Jewish scholarship and the development of Halakha during the Geonic era (from c. 589 to 1038 CE; Hebrew dates: 4349 AM to 4798 AM) in what is called "Babylonia" in Jewish sources. This term is neither geopolitically nor geographically identical with the ancient empires of Babylonia, since the Jewish focus of interest has to do with the Jewish religious academies, which were mainly situated in an area between the rivers Tigris and Euphrates and primarily between Pumbedita (modern Fallujah, a town west of Baghdad), and Sura, a town farther south down the Euphrates. At the time this area was part of the region known as Asōristān (under the Sasanian Empire) or Iraq (under the Muslim caliphate until the 11th century).
The key work of these academies was the compilation of the Babylonian Talmud, started by Rav Ashi and Ravina, two leaders of the Babylonian Jewish community, around the year 550. Editorial work by the Savoraim or Rabbanan Savoraei (post-Talmudic rabbis), continued on this text for the next 250 years. In fact, much of the text did not reach its final form until around 700. The two most famous academies were located at Sura and Pumbedita; the Sura Academy was originally dominant, but its authority waned towards the end of the Geonic period and the Pumbedita Academy's Geonate gained ascendancy. Major yeshivot were also located at Nehardea and Mahuza (al-Mada'in).
