Disclosed herein is a refrigerator having an ice-making chamber, and the refrigerator may include a refrigerator body and an ice-making chamber, and the ice-making chamber may include an ice-making chamber body one side of which is opened, a connecting duct provided in a first sidewall of the ice-making chamber to be connected to the refrigerator body, an ice-making chamber door provided at a second sidewall of the ice-making chamber to open and close the ice-making chamber, and a protrusion portion formed to be protruded at the first sidewall. Accordingly, the thickness of the ice-making chamber door can be secured without changing a cool air channel of the ice-making chamber, thereby increasing a cooling chamber.