An attendance registration device including a processor that executes: a reception process of receiving input according to a first method or input according to a second method of identification information corresponding to a target person whose attendance needs to be registered; and a registration process of registering attendance by associating the identification information received in the reception process with an attendance type input at a predetermined timing, wherein in the registration process, an attendance type input prior to the input of the identification information is subjected to attendance registration in association with the identification information when an input method of the identification information whose input has been received in the reception process is the first method, and an attendance type input after the input of the identification information is subjected to attendance registration in association with the identification information when the input method of the identification information whose input has been received in the reception process is the second method.