Abstract: A shift control apparatus for a transmission coupled to a power source via a clutch includes an electronic control unit for delivering a shift command giving instructions for a gear shifting, and a gear shift unit for performing the gear shifting in response to the shift command. The electronic control unit delivers, in association with the shift command, a first clutch stroke command varying between off-clutch and an on-clutch positions. The shift control apparatus includes a hydraulic master cylinder producing a hydraulic pressure which serves as a second clutch stroke command and which varies in accordance with the operational position of a clutch pedal, and an air cylinder unit with a hydraulic cylinder section for switching the clutch between the off-clutch and on-clutch positions. The air cylinder unit operates in accordance with one of the first and second clutch stroke commands which represents a target clutch plate position closer to the off-clutch state.