A refrigerator that includes a main body, a wall and a storage compartment. The refrigerator further includes a door rotatably coupled to the main body configured to open and close the storage compartment. The door includes an ice-making chamber formed in a front surface of the door. The refrigerator also includes a cooling chamber that includes a cooler is provided inside the wall and configured to generate cooling air. The refrigerator also includes a cooling air duct configured to connect the ice-making chamber and the cooling chamber to supply the cooling air generated by the cooler to the ice-making chamber.