A navigation device for a motorcycle operable in a comfortable position during driving by solving a problem that it is hard to operate the navigation device during driving and easily mounted on a vehicle by solving the problem that it is hard to mount the navigation device on the vehicle. The navigation device includes a navigation display section for displaying navigation information such as a destination and the current vehicle position, a control unit for controlling the navigation display section, and an operating section for performing an input operation to the control unit. The operating section is separated from the navigation display section and the operating section is disposed on the side of a vehicle body.