The
Strymonian or
Strymonic Gulf (Greek:Στρυμονικός Κόλπος,
Strymonikos Kolpos), formerly known as the
Gulf of Rendina, 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. The official name is
Orfano Gulf (Κόλπος Ορφανού).