A power transmission apparatus comprising: a clutch member (4a, 4b) housed in a clutch housing that rotates together with an input member that rotates with a driving force of an engine of a vehicle, the clutch housing having a plurality of driving clutch plates (6a, 6b) attached thereto, the clutch member (4a, 4b) having a plurality of driven clutch plates attached thereto, the driven clutch plates (7a, 7b) being arranged alternately with the driving clutch plates (6a, 6b), the clutch member (4a, 4b) being connected to an output member that is able to rotate a wheel of the vehicle; a pressure member movable between an operating position where the driving and driven clutch plates (6a, 6b, 7a, 7b) are pressed against each other so as to enable transmission of the driving force of the engine to the wheel and a non-operating position where a pressing force exerted on the driving and driven clutch plates (6a, 6b, 7a, 7b) is released so as to cut off transmission of the driving force of the engine to the wheel; and a clutch spring to urge the driving and driven clutch plates (6a, 6b, 7a, 7b) in a direction in which the driving and driven clutch plates (6a, 6b, 7a, 7b) are to be pressed against each other or in a direction in which the driving and driven clutch plates (6a, 6b, 7a, 7b) are to be moved away from each other, wherein the driven clutch plates (7a, 7b) include first and second driven clutch plates (7a, 7b) respectively attached to the clutch member (4a, 4b) and the pressure member, and the pressure member includes a housing recess in which the clutch spring is housed, a side wall extending in an axial direction of the output member, defining the housing recess, and at least partially located between the clutch spring and the output member in a radial direction of the output member, a bottom wall continuous with the side wall, extending in the radial direction, and defining the housing recess, characterized in that an oil inlet port defined in a portion of a boundary region between the side wall and the bottom wall, the portion at least partially facing the output member in the radial direction, the oil inlet port allowing oil to flow into the housing recess, and an oil supply port through which oil that has flowed into the housing recess is supplied to the second driven clutch plate attached to the pressure member, assuming a direction in which the pressure member approaches the clutch member (4a, 4b) is a first direction and a direction in which the pressure member moves away from the clutch member (4a, 4b) is a second direction, the whole of the oil supply port is located ahead of the oil inlet port in the second direction. a clutch member (4a, 4b) housed in a clutch housing that rotates together with an input member that rotates with a driving force of an engine of a vehicle, the clutch housing having a plurality of driving clutch plates (6a, 6b) attached thereto, the clutch member (4a, 4b) having a plurality of driven clutch plates attached thereto, the driven clutch plates (7a, 7b) being arranged alternately with the driving clutch plates (6a, 6b), the clutch member (4a, 4b) being connected to an output member that is able to rotate a wheel of the vehicle; a pressure member movable between an operating position where the driving and driven clutch plates (6a, 6b, 7a, 7b) are pressed against each other so as to enable transmission of the driving force of the engine to the wheel and a non-operating position where a pressing force exerted on the driving and driven clutch plates (6a, 6b, 7a, 7b) is released so as to cut off transmission of the driving force of the engine to the wheel; and a clutch spring to urge the driving and driven clutch plates (6a, 6b, 7a, 7b) in a direction in which the driving and driven clutch plates (6a, 6b, 7a, 7b) are to be pressed against each other or in a direction in which the driving and driven clutch plates (6a, 6b, 7a, 7b) are to be moved away from each other, wherein the driven clutch plates (7a, 7b) include first and second driven clutch plates (7a, 7b) respectively attached to the clutch member (4a, 4b) and the pressure member, and the pressure member includes a housing recess in which the clutch spring is housed, a side wall extending in an axial direction of the output member, defining the housing recess, and at least partially located between the clutch spring and the output member in a radial direction of the output member, a bottom wall continuous with the side wall, extending in the radial direction, and defining the housing recess, characterized in that an oil inlet port defined in a portion of a boundary region between the side wall and the bottom wall, the portion at least partially facing the output member in the radial direction, the oil inlet port allowing oil to flow into the housing recess, and an oil supply port through which oil that has flowed into the housing recess is supplied to the second driven clutch plate attached to the pressure member, assuming a direction in which the pressure member approaches the clutch member (4a, 4b) is a first direction and a direction in which the pressure member moves away from the clutch member (4a, 4b) is a second direction, the whole of the oil supply port is located ahead of the oil inlet port in the second direction.