The present embodiments relate to a collision prevention apparatus and method, and a driving support apparatus. The collision prevention apparatus may comprise: a collision risk determiner that determines a collision risk of a vehicle, a driving intervention determiner that determines driving intervention of a driver, and a collision prevention controller that controls a collision risk alert according to a result of determination on a collision risk of the vehicle, and adjusts a braking time point of the vehicle according to a result of determination on driving intervention of the driver.