A control apparatus for a hybrid vehicle includes: a drive mode determination device that determines one drive mode from a plurality of drive modes based on a status of the vehicle, wherein the drive modes include: an engine stop motor drive mode in which the vehicle is driven by a driving force from a motor while stopping an engine; an idle cylinder deactivation motor drive mode in which the vehicle is driven by the driving force from the motor by operating a power generator as an electric motor by running the engine while maintaining the engine deactivated; and an engine drive mode in which the vehicle is driven by a driving force from the engine; and a transition rate modification device that, when it is determined by the drive mode determination device that a mode transition from a current drive mode to another drive mode should take place, modifies a transition rate for transitioning from the current drive mode to the another drive mode according to the drive mode to be transitioned.