Amram Gaon (Hebrew: עמרם גאון, or Amram bar Sheshna, Hebrew: עמרם בר רב ששנא, or sometimes: Amram ben Sheshna or Amram b. Sheshna; died 875) was a gaon, head of the Jewish Talmud Academy of Sura during the 9th century. He authored many responsa, but his chief work was liturgical. He was the first to arrange a complete liturgy for the synagogue. His Prayer Book (Siddur Rav Amram or Seder Rav Amram), which took the form of a long responsum to the Jews of Spain, is still extant and was an important influence on most of the current rites in use among the Jews.