A liquid discharge apparatus includes: a flow passage structure; and a piezoelectric actuator which is joined to the flow passage structure, the piezoelectric actuator including: a first piezoelectric layer; a second piezoelectric layer; a plurality of first electrodes which are arranged on an upper surface of the first piezoelectric layer; a second electrode which is arranged between the first piezoelectric layer and the second piezoelectric layer; a first conductive pattern which is arranged in an area disposed on an outer side of the plurality of first electrodes on the upper surface of the first piezoelectric layer; a conducting portion which is arranged in a through-hole penetrating through the first piezoelectric layer, the through-hole being formed in the first conductive pattern; and a second conductive pattern which is arranged between the through-hole and the plurality of first electrodes on the upper surface of the first piezoelectric layer.