A parking assist apparatus includes a monitor displaying an image captured by a camera mounted to a vehicle for capturing an image in a moving direction of the vehicle and an assist information output device outputting assist information for assisting a parking operation and displaying the assist information on the monitor, wherein the assist information output device: calculates a locus for guiding the vehicle to a parking position specified on the image displayed on the monitor; sets a target position on the locus for guiding the vehicle to the parking position; outputs guide information corresponding to the target position so as to be displayed on the locus in the image displayed on the monitor; and outputs a navigation mark corresponding to a current position of the vehicle so as to be displayed on the monitor.