A steering assist apparatus is configured to, when performing a steering assist control for parking, perform one or both of the following processes (a) and (b): (a) a first setting process for settinga movement path when an oncoming lane is present, the first setting process being a process for setting the movement path in such a manner that a vehicle body does not enter the oncoming lane side from an own lane across a center line or a predetermined line obtained by translating the center line; and (b) a second setting process for setting the movement path when a following vehicle is present,the second setting process being a process for setting the movement path in such a manner that a distance between the vehicle body and a parking-possible region is less than a predetermined threshold.