The present invention relates to a refrigerator having an instant ice maker, and according to an aspect of the present invention, there is provided a refrigerator including a refrigerator body provided with a freezing chamber and a refrigerating chamber; a first and a second ice maker disposed inside the refrigerator, respectively; a water supply means configured to supply water to the first and the second ice maker; and a precooling means provided between the first ice maker and the water supply means to precool water supplied to the first ice maker.