Xyniae was an ancient city in Achaea Phthiotis, Thessaly, Greece, strategically positioned on a promontory in Lake Xynias on the western slopes of Mount Othrys. It controlled vital passages from Lamia to Thaumaci (modern Domokos). The city changed hands repeatedly: Aetolian in the late 3rd century BC, then Macedonian, before being plundered and its population massacred by Aetolians in 198 BC. Roman general Flamininus reached Xyniae after a three-day march from Heraclea in 197 BC. Known as Ezeros in the Middle Ages, the ancient site is marked by ruined structures on a peninsula in the lake near modern Xyniada.
Xyniae

| Type | City/town/settlement |
|---|---|
| Period | 500 BC - 1 AD |
| Country | Greece |
| Coordinates | 39.0384° N, 22.2691° E |
Greece