A piezoelectric element (100) includes: a piezoelectric body (200) having a first surface (201) and a second surface (202) that are different from each other; a first electrode (300) provided at the first surface (201); and a second electrode (400) provided at the second surface (202). The piezoelectric body contains a helical chiral polymer crystal having an orientation axis as a crystal axis, the orientation axis is uniaxially oriented in a manner of intersecting both the first surface and the second surface, and a degree of orientation of the orientation axis in the piezoelectric body is 0.80 or more.