A refrigerator which provides an improved installation structure of a receiving device disposed in a storage chamber such that the receiving device can be stably supported in the storage chamber and easily mounted on and separated from the storage chamber. The refrigerator includes a shelf fixing structure which fixes a shelf to the storage chamber. The shelf fixing structure includes an engaging protrusion formed on a lower surface of the shelf at one side of the shelf, a stepped surface formed at the other side of the shelf, a restriction groove formed at a position corresponding to the engaging protrusion to restrict the engaging protrusion, and a restriction portion formed at a position corresponding to the stepped surface to restrict the stepped surface.