A head gimbal assembly includes a suspension board with circuit, a pair of piezoelectric elements mounted on the suspension board with circuit to be expandable/contractible, and a slider on which a magnetic head is mounted and which is mounted on the suspension board with circuit and configured to be able to swing with expansion/contraction of the pair of piezoelectric elements. The pair of piezoelectric elements are placed on the suspension board with circuit such that a first imaginary line extending along an expanding/contracting direction of one of the piezoelectric elements crosses a second imaginary line extending along an expanding/contracting direction of the other piezoelectric element.