An input device for a mobile body allows for a safe input operation at the time of operating equipment, such as a car, regardless of whether the mobile body is traveling or stopped. The input device includes an input section for receiving inputs by hand and voice operations, a traveling state determination section for determining a traveling state of the mobile body, and an item executability determination section for determining, in the determined traveling state, whether each of the received inputs corresponds to an item executable by the hand and voice operations. The input device also includes a display content generation section for generating a display mode which distinguishably shows whether nor not the item is executable by the hand and voice operations in accordance with a determination by the item executability determination section, and a display section for displaying the generated display mode.