A refrigerator includes an outer case, an inner case configured to define a storage space, an insulation material between the outer case and the inner case, a tank provided inside the storage space to store liquid, a rear guide provided at a rear through which a supply tube configured to supply liquid to the tank passes, a dispenser provided inside of the storage space to dispense liquid from the tank, and a tube guide embedded in the insulation material between the inner case and the outer case to define a passage through which a discharge tube configured to connect the tank to the dispenser passes.