A power unit for a vehicle includes a clutch actuator mounted to a clutch cover covering first and second hydraulic clutches provided between a crankshaft and first and second main shafts of a transmission. A first actuator body is mounted to the clutch cover at such a position that at least part of the first actuator body overlaps with the first and second hydraulic clutches when viewed from the direction along the axis of the first and second main shafts. A first set of valves, out of a plurality of valves constituting part of the clutch actuator, are disposed in the first actuator body, with their axes of operation set along a plane intersecting the axis of the first and second main shafts. A second set of valves are disposed in a second actuator body mounted to the clutch cover so as to overlap with the first actuator body.