Liquid-discharging head, liquid-discharging unit, and device for discharging liquid

This liquid-discharging head is provided with: a nozzle plate including a plurality of nozzles that discharge liquid; a flow-channel member including individual liquid chambers in communication with the nozzles and circulation flow channels in communication with the individual liquid chambers; and a common liquid chamber member which forms a common liquid chamber that supplies the liquid to the individual liquid chambers, and a circulation common liquid chamber in communication with the circulation flow channels. The common liquid chamber member is joined to the flow-channel member.