A navigation apparatus for a movable body is provided with: a measurement device for measuring a present position of the movable body; a setting device for setting route position information corresponding to a plurality of scheduled route positions which are scheduled to be passed on a route to a destination; a memory device for storing the present position at predetermined time intervals as passed position information between a start time, which is a time when the setting device starts to set the route position information, and an end time, which is a time when the setting device ends to set the route position information; a judgement device for judging whether or not the movable body has passed the scheduled route positions between the start time and the end time on the basis of the passed position information stored in the memory device, after the end time; and a guidance device for generating a message to guide the movable body from the measured present position to the destination on the basis of the scheduled route positions which the movable body has not passed yet according to a judgement result of the judgement device.