An ink jet head, comprising: a plurality of nozzles arranged in two directions in an array with intervals therebetween; and a plurality of actuators, corresponding to this plurality of nozzles, configured to eject ink from the plurality of nozzles by pressurizing the ink, a flow path substrate, a plurality of mounting pads, a first wiring pattern including a plurality of individual electrodes each individual electrode being connected to each actuator individually and independently, a second wiring pattern including a plurality of common electrodes (8a, 8b, 8c), a first common electrode electrically connected to a mounting pad at an end portion and Z a second common electrode electrically connected to actuators that are adjacent to each other, the plurality of actuators, the plurality of individual electrodes, the plurality of common electrodes (8a, 8b, 8c) Z and the plurality of mounting pads are formed on the flow path substrate, wherein each of the plurality of actuators includes a piezoelectric body disposed on a vibrating plate, an actuator common electrode electrically connected to the piezoelectric body, and an actuator individual electrode electrically connected to the piezoelectric body, the piezoelectric body being interposed between the actuator individual electrode and the actuator common electrode, a stacked body of the actuator individual electrode, the piezoelectric body, and the actuator common electrode being formed on the vibrating plate in a toroidal shape around the nozzle, each actuator individual electrode of the plurality of actuators is electrically connected to one of the individual electrodes of the first wiring pattern disposed on the vibrating plate, each actuator common electrode of the plurality of actuators is connected to the second wiring pattern disposed on the vibrating plate separated from the first wiring pattern, the second wiring pattern being electrically connected to a wiring portion that passes between the outer peripheral portions of the plural piezoelectric bodies, characterized in that: a third wiring pattern is disposed on the vibrating plate, extends in a direction different from a direction of the second common electrode of the second wiring pattern, and is electrically connected to the second wiring pattern at intersections with the second common electrode or through a third common electrode included in the second wiring pattern and which branches off from the Z second common electrode, and the first wiring pattern and the third wiring pattern are electrically isolated at intersections thereof. a plurality of nozzles arranged in two directions in an array with intervals therebetween; and a plurality of actuators, corresponding to this plurality of nozzles, configured to eject ink from the plurality of nozzles by pressurizing the ink, a flow path substrate, a plurality of mounting pads, a first wiring pattern including a plurality of individual electrodes each individual electrode being connected to each actuator individually and independently, a second wiring pattern including a plurality of common electrodes (8a, 8b, 8c), a first common electrode electrically connected to a mounting pad at an end portion and Z a second common electrode electrically connected to actuators that are adjacent to each other, the plurality of actuators, the plurality of individual electrodes, the plurality of common electrodes (8a, 8b, 8c) Z and the plurality of mounting pads are formed on the flow path substrate, wherein each of the plurality of actuators includes a piezoelectric body disposed on a vibrating plate, an actuator common electrode electrically connected to the piezoelectric body, and an actuator individual electrode electrically connected to the piezoelectric body, the piezoelectric body being interposed between the actuator individual electrode and the actuator common electrode, a stacked body of the actuator individual electrode, the piezoelectric body, and the actuator common electrode being formed on the vibrating plate in a toroidal shape around the nozzle, each actuator individual electrode of the plurality of actuators is electrically connected to one of the individual electrodes of the first wiring pattern disposed on the vibrating plate, each actuator common electrode of the plurality of actuators is connected to the second wiring pattern disposed on the vibrating plate separated from the first wiring pattern, the second wiring pattern being electrically connected to a wiring portion that passes between the outer peripheral portions of the plural piezoelectric bodies, characterized in that: a third wiring pattern is disposed on the vibrating plate, extends in a direction different from a direction of the second common electrode of the second wiring pattern, and is electrically connected to the second wiring pattern at intersections with the second common electrode or through a third common electrode included in the second wiring pattern and which branches off from the Z second common electrode, and the first wiring pattern and the third wiring pattern are electrically isolated at intersections thereof. a third wiring pattern is disposed on the vibrating plate, extends in a direction different from a direction of the second common electrode of the second wiring pattern, and is electrically connected to the second wiring pattern at intersections with the second common electrode or through a third common electrode included in the second wiring pattern and which branches off from the Z second common electrode, and the first wiring pattern and the third wiring pattern are electrically isolated at intersections thereof.