A liquid ejection head includes: actuator plates having discharge channels to be filled with an ink; sub-plates stacked on the −Z-direction end surfaces of discharge channels in the actuator plates along a flow direction of the ink and having communication paths communicating with the discharge channels; and a nozzle plate stacked on the −Z-direction end surfaces of the communication paths in the sub-plates along the flow direction and having nozzle holes communicating with the discharge channels through the communication paths. The −Z-direction end surfaces of the sub-plates are polished.