A fan clutch for a vehicle may include a shaft rotated by a drive force and having a first oil line formed in the shaft in a radial direction thereof, a rotor rotated in combination with the shaft, wherein the rotor includes an oil storage chamber formed in the rotor and the oil storage chamber communicates with the first oil line, a valve formed in an end of the oil storage chamber and being selectively opened, wherein the valve may be configured to allow oil stored in the oil storage chamber to flow to an outside of the rotor through the first oil line, and a housing formed to surround the rotor, and provided with a second oil line through which the oil that has flowed through the valve flows to the first oil line through an actuation chamber surrounding the rotor.