Seleucus III Soter, called Seleucus Ceraunus (ca. 243 BC - 223 BC), was a ruler of the Hellenistic Seleucid kingdom, the eldest son of Seleucus II Callinicus. After a brief reign of three years (225 BC-223 BC), Seleucus was assassinated in Asia Minor by members of his army while on campaign against Attalus I of Pergamon. His official byname "Soter" means "Saviour", while his nickname "Ceraunus" means "Thunder" in Greek.
![Coin of Seleucus III. Greek inscription reads [Β]ΑΣΙΛΕΩΣ [Σ]ΕΛΕΥΚΟΥ (king Seleucus).](/description/Image:SeleucusIII.jpg)
