What is "callixenus"

Callixenus or Kallixenus or Kallixenos may refer to:

• Kallixenos, nephew of Cleisthenes and head of the Alcmaeonids, ostracised 485 BC
• Callixenus, Athenian politician who aggressively prosecuted those held to be to blame for the disaster at the Battle of Arginusae in 406 BC
• Callixenus of Rhodes, Hellenistic historian, main source for the Tessarakonteres