The Pagasetic Gulf (Greek: Παγασητικός κόλπος, Pagasitikós kólpos; ) is a rounded gulf (max. depth 102 metres) in the Magnesia regional unit (east central Greece) that is formed by the Mount Pelion peninsula. It is connected with the Euboic Sea. The passage into the Euboic Sea is narrow and is about 4 km.