A refrigerator comprises: a main body having a storage chamber; an inner door which is rotatably coupled to the main body and has a door opening; an outer door which is rotatably provided in front of the inner door to open/close the door opening; a dispenser which includes a water intake space and an operating lever, and supplies water to the water intake space through manual manipulation of the operating lever; a water bottle installation space; and an auto-fill device which includes a water bottle sensor that senses whether the water bottle is installed in the water bottle installation space and a water level sensor that senses the water level in the water bottle, and which automatically supplies water to the water bottle so that a certain amount of water can be filled in the water bottle when the water bottle is installed in the water bottle installation space. The water intake space and the water bottle installation space are arranged in the door opening of the inner door so as to be accessible while the inner door is closed.