Alp Er Tunga or Alp Er Tonğa ("Brave Soldier Tiger": Alp "brave, hero, conqueror, warrior", Er "man, male, soldier, Tom", Tonğa "Siberian tiger", Divanü Lugati't-Türk Veri Tabanı) is a mythical hero who was mentioned in Mahmud al-Kashgari's Divânu Lügati't-Türk (Arabic: دیوان لغات الترک Compendium of the languages of Turks), Turkic mythology and Turkish literature.
In Turkic literature he is considered to be the same character as Afrasiab in the Persian Epic Shahnameh. He is sometimes mentioned as a khan of Saka (Scythia).
References
Alp Er Tunga Wikipedia(Text) CC BY-SA