Disclosed is a refrigerator. The present invention provides a refrigerator having a freezer compartment and a refrigerator compartment, the refrigerator including an icemaker provided to the freezer compartment or a freezer compartment door configured to open/close the freezer compartment, a dispenser provided to a refrigerator compartment door configured to open/close the refrigerator compartment, a water tank provided to the refrigerator compartment door, the water tank having an inlet for putting in water and an outlet for supplying water to the dispenser, a pump configured to send the water supplied from the water tank to the icemaker, and a slide cap movably provided to the water tank so as to be selectively coupled to a passage connected to the pump.