Heracleium or Herakleion () was a city on the south coast of ancient Pieria, Macedon, between Phila and Leibethra. During Peloponnesian War it passed into Athenian control in the years 430/29, 425/4 and 421 BCE. After Athenian alliance with Perdiccas II in 413 BCE it became again a city of Macedon.
The site of Heracleium is near the modern Platamon.