Atlas of Battles

naval engagement, ancient

Battle of Byzantium

Battle of Byzantium was a naval engagement fought in 317 BC in what is now Turkey. It was part of Second War of the Diadochi, which ran from 319 BC to 315 BC. The recorded result: Antigonid victory.

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Locator map of Byzantion (Byzantium). Based on File:Europe topography map.png
Locator map of Byzantion (Byzantium). Based on File:Europe topography map.png. Evil berry, CC BY-SA 3.0, via Wikimedia Commons.
Fought317 BC
WhereTurkey40.200N, 26.400E
OutcomeAntigonid victory
BelligerentsEnemies of PolyperchonagainstSupporters of Polyperchon
Casualties and lossesUnknownandCleitus's entire force captured or killed
Part ofSecond War of the Diadochi319 BC to 315 BC

Where it sits in Second War of the Diadochi

Battle of Rhosos, 318 BCBattle of Paraitacene, 317 BCBattle of Byzantium, 317 BCSiege of Megalopolis, 317 BCSiege of Pydna, 317 BCBattle of Gabiene, 316 BCBattle of the river Coprates, 316 BC318 BC316 BCBattle of Byzantium, 317 BC
7 placed engagements of Second War of the Diadochi in time order; taller ticks are more widely documented. Each tick is a link.

Record

Date317 BC (year precision)
PlaceTurkey
40.200N, 26.400E
KindNaval engagement, ancient
StrengthFirst battle: Diod. 100+ ships; Poly. 130 ships; ----Second battle: The sea assault: 60 ships; The land assault: a large force of archers, slingers and peltastsFirst battle: slightly larger; ----Second battle: Unknown (Cleitus's entire army and fleet)
Casualties and lossesUnknownCleitus's entire force captured or killed
Commanders
  • Cleitus the White
Battle of ByzantiumBattle of ByzantiumBattle of the HellespontBattle of ElliBattle of the DardanellesBattle of the DardanellesBattle of CynossemaBattle of CynossemaBalıkesirTekirdağXanthiMitiliniLüleburgazKavalaAlexandroupoli100 km40.200N, 26.400E
The recorded site, with the nearest other engagements in the atlas. Present-day coastlines, rivers and borders; towns from Natural Earth.

Nearest engagements

Contested ground: this site was fought over 5 times between 317 BC and 1912.

In the same war

Battle of Byzantium is one of 137 engagements of the 4th century BC in the atlas and one of 622 in present-day Turkey.

Sources

Identity, coordinates, dates and the war from Wikidata Q2237367, released under CC0. Result, belligerents, commanders, strength and casualties from the infobox of the English Wikipedia article Battle of Byzantium, revision 1370435697, read 2026-11-14, licensed CC BY-SA 4.0; the article's text is not reproduced here. Present-day country and state from Natural Earth. Dates before 1582 follow the Julian calendar as recorded.