Strymonian Gulf

The Strymonian or Strymonic Gulf (Greek: Στρυμονικός Κόλπος, romanized: Strymonikos Kolpos), also known as the Orfano Gulf (Greek: Κόλπος Ορφανού, romanized: Kolpos Orfanou), is a branch of the Thracian Sea—itself part of the Aegean Sea—lying east of the Chalcidice peninsula and south of the Serres regional unit. It was formerly known as the Gulf of Rendina, in reference to the ancient colony of Eion along the gulf’s shores.

The river Strymon empties into the gulf.