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
See also
Antão