A manual transmission (M/T) for a vehicle having an internal combustion engine (E/G) and an electric motor (M/G) as power sources, said manual transmission (M/T) comprising: an input shaft (Ai) for receiving power from the internal combustion engine; an output shaft (Ao) for outputting power to a drive wheel of the vehicle; and a transmission mechanism which selectively enters any of a plurality of gear stages (EV gear stage, 2-nd gear to 5-th gear stages) when a shift operation member is selectively moved on a shift pattern by a driver to respective shift completion positions corresponding to the gear stages; and a connection changeover mechanism which selectively realizes an IN connection state in which the output shaft (Am) of the electric motor is connected to the input shaft of the transmission in a power transmissible manner and an OUT connection state in which the output shaft of the electric motor is connected to the output shaft of the transmission in a power transmissible manner, characterized in that the transmission mechanism is configured such that the moving operation of the shift operation member to one of the respective shift completion positions corresponding to the plurality of gear stages is achieved by setting the position of the shift operation member to a corresponding selection position through a selection operation which is an operation in a left-right direction of the vehicle in a state in which no power transmission system is established between the input shaft and the output shaft, and subsequently moving the shift operation member from the corresponding selection position to a corresponding shift completion position through a shift operation which is an operation in a front-rear direction of the vehicle; and the connection changeover mechanism is configured to switch the connection state of the output shaft of the electric motor from the IN connection state to the OUT connection state when the position of the shift operation member moves from a selection position corresponding to a first gear stage (EV gear stage) of the plurality of gear stages to a shift completion position corresponding to the first gear stage, and to switch the connection state of the output shaft of the electric motor from the OUT connection state to the IN connection state when the position of the shift operation member moves from the shift completion position corresponding to the first gear stage to the selection position corresponding to the first gear stage. an input shaft (Ai) for receiving power from the internal combustion engine; an output shaft (Ao) for outputting power to a drive wheel of the vehicle; and a transmission mechanism which selectively enters any of a plurality of gear stages (EV gear stage, 2-nd gear to 5-th gear stages) when a shift operation member is selectively moved on a shift pattern by a driver to respective shift completion positions corresponding to the gear stages; and a connection changeover mechanism which selectively realizes an IN connection state in which the output shaft (Am) of the electric motor is connected to the input shaft of the transmission in a power transmissible manner and an OUT connection state in which the output shaft of the electric motor is connected to the output shaft of the transmission in a power transmissible manner, characterized in that the transmission mechanism is configured such that the moving operation of the shift operation member to one of the respective shift completion positions corresponding to the plurality of gear stages is achieved by setting the position of the shift operation member to a corresponding selection position through a selection operation which is an operation in a left-right direction of the vehicle in a state in which no power transmission system is established between the input shaft and the output shaft, and subsequently moving the shift operation member from the corresponding selection position to a corresponding shift completion position through a shift operation which is an operation in a front-rear direction of the vehicle; and the connection changeover mechanism is configured to switch the connection state of the output shaft of the electric motor from the IN connection state to the OUT connection state when the position of the shift operation member moves from a selection position corresponding to a first gear stage (EV gear stage) of the plurality of gear stages to a shift completion position corresponding to the first gear stage, and to switch the connection state of the output shaft of the electric motor from the OUT connection state to the IN connection state when the position of the shift operation member moves from the shift completion position corresponding to the first gear stage to the selection position corresponding to the first gear stage.