Sopater of Apamea (Ancient Greek: Σώπατρος ὁ Ἀπαμεύς; died before 337 AD) was a distinguished sophist and Neoplatonist philosopher.
Sopater was a disciple of Iamblichus, after whose death (c. 325 AD), he went to Constantinople, where he enjoyed the favour and personal friendship of Constantine I.
The Suda lists that he wrote a variety of works, including one On Providence, and another called People who have Undeserved Good or Bad Fortune.
The most significant work attributed to Sopater is the Diairesis Zetematon (Division of Questions), which is a collection of 81 declamation themes, as well as containing instructions on how they are to be treated.
This was allegedly to detain a fleet carrying grain, thereby preventing it from reaching Constantinople, the empire's capital and Constantine's residence, and disrupting its food supply.