To provide a piezoelectric actuator that is small in variation of the displacement to formation variation of the individual electrode, and to provide a liquid ejection head using the same and a recording device.

The piezoelectric actuator 21 is provided by laminating an internal electrode 34, a piezoelectric ceramic layer 21b, and a surface electrode 35 in this order on a diaphragm 21a. In the piezoelectric actuator, the spaces 21c and 21d are provided on the piezoelectric ceramic layer 21b under a peripheral edge of the surface electrode 35.