A refrigerator including a storage chamber. The refrigerator also includes a first sidewall and a second sidewall arranged to form at least a portion of both side surfaces of the storage chamber. The refrigerator further includes a light source arranged on the first sidewall to illuminate an inside of the storage chamber. The refrigerator also includes a light guide member provided inside the storage chamber and formed to extend between the first sidewall and the second sidewall to guide light emitted from the light source. The light guide member includes an incident surface arranged to face the first sidewall and an exit surface through which the light guided by the light guide member is emitted to an outside of the light guide member.