A control system for an engine is provided. The control system includes an accelerator opening acquiring module for acquiring an opening of an accelerator, a target acceleration setting module for setting a target acceleration of a vehicle based on the accelerator opening acquired by the accelerator opening acquiring module, and an engine control module for adjusting an engine torque to achieve the target acceleration set by the target acceleration setting module. Within a predetermined range of the accelerator opening, the target acceleration setting module sets the target acceleration corresponding to the accelerator opening acquired by the accelerator opening acquiring module, to cause a change of the target acceleration with respect to a change of the accelerator opening to be substantially constant regardless of an operating state of the vehicle, the predetermined range including a value of the accelerator opening at which the target acceleration becomes zero.