The ancient shipyard
|Administrative region||West Greece|
|• Municipal unit||270.9 km2 (104.6 sq mi)|
|Elevation||10 m (30 ft)|
|• Municipal unit||9,373|
|• Municipal unit density||35/km2 (90/sq mi)|
|Time zone||UTC+2 (EET)|
|• Summer (DST)||UTC+3 (EEST)|
|Postal code||300 01|
Ancient Oeniadai (Ancient Greek: Οἰνιάδαι) was a port town on the west bank of the river Achelous and one of the most important towns of ancient Acarnania. Oeniadai was first mentioned in the 5th century BC. 
It was an important port on the route to Corfu. It changed its alliances repeatedly in the course of history; at first it was a member of the Peloponnesian League, but in 424 BC it was incorporated in the Delian League. In the Hellenistic period, Oiniadai allied with the Aetolians until 218 BC when Philip V declared it free. From 211-189 BC during the Roman-Macedonian wars the city was again under Aetolian control. In Roman times it lost its strategic importance. However it was still inhabited in the 3rd century AD judging from coin finds.
The city walls are well preserved and several buildings were excavated beginning in 1900-1901:
- a theatre
- a bath complex
- a shipyard.
The municipal unit Oiniades is subdivided into the following communities (constituent villages in brackets):
- Neochori Mesolongiou (Neochori, Magoula, Marmara)
- Mastros (Mastros, Platania)
- "Απογραφή Πληθυσμού - Κατοικιών 2011. ΜΟΝΙΜΟΣ Πληθυσμός" (in Greek). Hellenic Statistical Authority.
- "Population & housing census 2001 (incl. area and average elevation)" (PDF) (in Greek). National Statistical Service of Greece.
- OINIADAI Greece, entry in The Princeton Encyclopedia of Classical Sites.
- Smith, William, ed. (1854–1857). "Oeniadae". Dictionary of Greek and Roman Geography. London: John Murray.