A refrigerator is provided. The refrigerator has a refrigerator body including a storage chamber to store foods, a door configured to open or close the storage chamber, an ice maker mounted on the door and an ice maker cover to at least partially cover the ice maker, the ice maker cover including a cool air inlet port for introducing cool air at an upper portion thereof. The ice maker includes a first guide coupled to a lower portion of the ice maker to guide cool air to pass through the lower portion of the ice maker and a second guide provided at an upper side of the ice maker to guide cool air introduced through the cool air inlet port to be branched off and flowed into the upper and lower portions of the ice maker.