A clutch apparatus for a vehicle, comprising: a clutch outer to which power from an internal combustion engine may be inputted; a pressure receiving plate fixed to an output power shaft; a driving friction plate which is engaged by the clutch outer; a driven friction plate disposed in an opposing relationship to the driving friction plate; a pressure plate disposed so as to cooperate with the pressure receiving plate to sandwich the driving friction plate and the driven friction plate therebetween, and which is movable in an axial direction of the output power shaft; a clutch hub disposed between the pressure receiving plate and the pressure plate in an axial direction of the output power shaft, for being engaged by the driven friction plate; a counter torque reduction mechanism which causes the clutch hub to press the pressure plate in a direction so that the pressure plate is spaced away from the pressure receiving plate in response to an input of rotational power from the output power shaft to the pressure receiving plate; and a cancel mechanism which prevents the counter torque reduction mechanism from functioning in a state in which a rotational speed of the clutch hub is equal to or lower than a predetermined rotational speed; the cancel mechanism including a weight member fitted for sliding movement in the clutch hub in such a manner as to be capable of slidably moving in a radial direction of the output power shaft and having an engaging portion at a radially inner end portion, an elastic member which biases the weight member radially inwardly, the clutch apparatus being characterised in that the cancel mechanism further includes a locking element formed on the output power shaft or on a locking member fixed to the output power shaft, so as to be capable of being engaged with the engaging portion from the side opposite to the pressure plate. a clutch outer to which power from an internal combustion engine may be inputted; a pressure receiving plate fixed to an output power shaft; a driving friction plate which is engaged by the clutch outer; a driven friction plate disposed in an opposing relationship to the driving friction plate; a pressure plate disposed so as to cooperate with the pressure receiving plate to sandwich the driving friction plate and the driven friction plate therebetween, and which is movable in an axial direction of the output power shaft; a clutch hub disposed between the pressure receiving plate and the pressure plate in an axial direction of the output power shaft, for being engaged by the driven friction plate; a counter torque reduction mechanism which causes the clutch hub to press the pressure plate in a direction so that the pressure plate is spaced away from the pressure receiving plate in response to an input of rotational power from the output power shaft to the pressure receiving plate; and a cancel mechanism which prevents the counter torque reduction mechanism from functioning in a state in which a rotational speed of the clutch hub is equal to or lower than a predetermined rotational speed; the cancel mechanism including a weight member fitted for sliding movement in the clutch hub in such a manner as to be capable of slidably moving in a radial direction of the output power shaft and having an engaging portion at a radially inner end portion, an elastic member which biases the weight member radially inwardly, the clutch apparatus being characterised in that the cancel mechanism further includes a locking element formed on the output power shaft or on a locking member fixed to the output power shaft, so as to be capable of being engaged with the engaging portion from the side opposite to the pressure plate. a weight member fitted for sliding movement in the clutch hub in such a manner as to be capable of slidably moving in a radial direction of the output power shaft and having an engaging portion at a radially inner end portion, an elastic member which biases the weight member radially inwardly, the clutch apparatus being characterised in that the cancel mechanism further includes a locking element formed on the output power shaft or on a locking member fixed to the output power shaft, so as to be capable of being engaged with the engaging portion from the side opposite to the pressure plate.