Abtao

Abtao may refer to:


 * Abtao Island, a Chilean island
 * Battle of Abtao, an 1866 naval battle between Spain and the allied Peru and Chile
 * Abtao-class submarine, a Peruvian Navy submarine class
 * BAP Abtao, Peruvian submarine of the Abtao class and a museum ship
 * Chilean corvette Abtao, a Chilean Navy corvette