| Conflict: | Battle of Andros |
| Partof: | the Greek War of Independence |
| Date: | 1st June |
| Place: | Off Andros, Aegean Sea |
| Coordinates: | 37.8364°N 24.8981°W |
| Commander1: | Georgios Sachtouris |
| Strength1: | 20 warships 8 fireships |
| Strength2: | 51 warships |
| Casualties1: | 3 fireships expended, 3 bruloteers dead and 4 wounded in the attack of the flagship |
| Casualties2: | Ottoman flagship destroyed 1 frigate destroyed 1 corvette destroyed More than 550 killed |
| Casualties3: | Greeks capture 5 Austrian merchant vessels |
| Commander2: | Koca Hüsrev Mehmed Pasha |
| Combatant1: |  First Hellenic Republic |
| Combatant2: | Ottoman Empire |
| Result: | Greek victory |
The Battle of Andros took place on 1 June (20 May O.S.) 1825 at Andros between the fleets of the Ottoman Empire and Revolutionary Greece.[1] The Greek fleet, under Georgios Sachtouris, comprising 20 warships and eight fireships, defeated the Ottoman fleet of 51 vessels by attacking and burning with two fireships the Ottoman flagship—a 66-gun double-banked frigate[2] —and another 34-gun frigate with another fireship.
The Ottoman fleet dispersed, allowing the Greeks to capture a sloop with its crew, as well as five Austrian cargo ships destined to support the Ottoman Siege of Missolonghi.