| Conflict: | Battle of Andros |
| Partof: | Third Syrian War |
| Date: | 246/245 BC |
| Place: | Andros |
| Result: | Antigonid victory |
| Combatant1: | Antigonid Macedon |
| Combatant2: | Ptolemaic Kingdom |
| Commander1: | Antigonus II Gonatas |
| Strength1: | Numerically inferior |
| Strength2: | Numerically superior |
The Battle of Andros was an obscure naval battle during the Third Syrian War. Despite its numerical superiority, the Egyptian fleet, probably commanded by Sophron of Ephesus, lost to a Macedonian fleet led by Antigonus II Gonatas. The Egyptian captain Ptolemy Andromachou, an illegitimate half-brother of the Pharaoh, lost his ship and crew, barely escaping to Ephesus.
The date of the battle is uncertain, but generally the year 246/245 BC is accepted.[1] Following the battle, the Egyptian king Ptolemy III Euergetes lost the dominion of the Nesiotic League to Antigonus Gonatas.[2]