A liquid ejecting apparatus includes a liquid ejecting head unit including a plurality of liquid ejecting heads in a parallel arrangement. Each liquid ejecting head ejects a liquid from nozzles formed in a nozzle face toward an ejection target object in accordance with a drive signal from a controller. Each liquid ejecting head has an individual two-dimensional code that includes at least a portion of information related to the liquid ejecting head. The liquid ejecting head unit includes a collective two-dimensional code that includes arrangement information of the liquid ejecting heads in the liquid ejecting head unit and collective information related to the information included in the individual two-dimensional codes.