A deceleration control apparatus to achieve the intended level of deceleration performance regardless of whether braking performance is changed by towing an object such as a trailer, and to reduce the possibility that a driver feels uncomfortable due to a change in the level of deceleration performance while the vehicle is running. Vehicle weight is calculated based on the actual running state of a vehicle, and it is determined whether the vehicle is towing an object based on the vehicle weight. When the vehicle is stationary, a deceleration pattern (the rate of change in a target deceleration) is changed based on whether the vehicle is towing an object. Therefore, it is possible to achieve the intended level of deceleration performance that matches the level of driver's request for deceleration, regardless of whether the vehicle weight is changed by towing an object.