A piezoelectric speaker comprising: a laminated body configured by bonding a plurality of sheets (12, 13), each being made of a polymer, to each other, wherein at least one (12; 13) of the plurality of sheets is a piezoelectric sheet that has a predetermined stretching axis and is made of a chiral polymer, wherein first and second electrodes (16, 17; 18, 19) for applying voltage to the piezoelectric sheet (12; 13) are formed on opposing first and second main surfaces of a vibration region to be vibrated, on the piezoelectric sheet (12; 13), the first and second main surfaces each comprising a central portion and an outer peripheral portion, at least one of the first (16; 18) and second (17; 19) electrodes is a divided electrode including a plurality of divided electrode portions (E1, E2, E3, E4) divided by a plurality of dividing lines (21a, 21b, 22a, 22b) extending in a radiation direction from the central portion of the respective main surface of the vibration region, wherein the plurality of electrode portions are distributed on the respective main surface of the vibration region along the outer peripheral portion of the respective main surface of the vibration region except for the central portion of the respective main surface of the vibration region, the plurality of dividing lines have any one of angles within the range of 0 degrees or more and less than 40 degrees and the range of more than 50 degrees to 90 degrees or less with respect to the stretching axis, and voltage is applied by each of the plurality of electrode portions in such a manner that electric field vectors generated in the thickness direction of the piezoelectric sheet direct in opposite directions between the adjacent ones of a plurality of sheet portions of the piezoelectric sheet (12; 13) to which voltage is applied by the plurality of electrode portions. a laminated body configured by bonding a plurality of sheets (12, 13), each being made of a polymer, to each other, wherein at least one (12; 13) of the plurality of sheets is a piezoelectric sheet that has a predetermined stretching axis and is made of a chiral polymer, wherein first and second electrodes (16, 17; 18, 19) for applying voltage to the piezoelectric sheet (12; 13) are formed on opposing first and second main surfaces of a vibration region to be vibrated, on the piezoelectric sheet (12; 13), the first and second main surfaces each comprising a central portion and an outer peripheral portion, at least one of the first (16; 18) and second (17; 19) electrodes is a divided electrode including a plurality of divided electrode portions (E1, E2, E3, E4) divided by a plurality of dividing lines (21a, 21b, 22a, 22b) extending in a radiation direction from the central portion of the respective main surface of the vibration region, wherein the plurality of electrode portions are distributed on the respective main surface of the vibration region along the outer peripheral portion of the respective main surface of the vibration region except for the central portion of the respective main surface of the vibration region, the plurality of dividing lines have any one of angles within the range of 0 degrees or more and less than 40 degrees and the range of more than 50 degrees to 90 degrees or less with respect to the stretching axis, and voltage is applied by each of the plurality of electrode portions in such a manner that electric field vectors generated in the thickness direction of the piezoelectric sheet direct in opposite directions between the adjacent ones of a plurality of sheet portions of the piezoelectric sheet (12; 13) to which voltage is applied by the plurality of electrode portions.