An operation assist apparatus (1) according an embodiment of the invention includes: an assist controller (34, 22) that assists a driver of a vehicle in operating the vehicle before a stop point; and a watching action detector (20, 16) that detects a watching action of the driver for watching the stop point. The assist controller (34, 22) changes an assist manner in which to assist the vehicle operation by the driver in accordance with whether the watching action is detected by the watching action detector (20, 16) during deceleration of the vehicle. Thus configured, the operation assist apparatus can accurately determine whether the driver will stop the vehicle at the stop point and thus can perform the vehicle operation assist appropriately.