A refrigerator includes a cabinet having a storage space, a door configured to open and close the storage space, and a gap adjusting device configured to be provided between the cabinet and the door and to adjust a gap between the cabinet and the door, in which the gap adjusting device includes a seating part formed on the door, and an adjusting member which is detachably mounted on the seating part and is in contact with the cabinet in a state where the door is closed, a plurality of adjusting parts having different heights are formed on the adjusting member, and a gap between the cabinet and the door is adjusted according to a combination of a contact surface between the seating part and the adjusting part selected when the adjusting member is mounted.