A piezoelectric element includes: a piezoelectric body； and a vibrating plate including single crystal silicon having anisotropy having orientation with a relatively high Young's modulus and orientation with a relatively low Young's modulus (hereinafter, referred to as “low Young's modulus orientation”) as a vibrating material, in which the piezoelectric body and the vibrating plate are laminated on each other so that the low Young's modulus orientation is in a direction along a high expansion and contraction direction among a direction where a degree of expansion and contraction caused according to a support structure of the piezoelectric body is relatively high (hereinafter, referred to as “high expansion and contraction direction”) and a direction where a degree thereof is relatively low.
