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. 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—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.