Provided is a refrigerator. The refrigerator includes a cabinet and a door. The door includes a door body in which an insulating material is filled and a panel assembly detachably mounted on the door body. The panel assembly includes a panel which is configured to define a front surface of the door and through which light is transmitted, a back cover configured to define a rear surface of the panel assembly, a lower bracket configured to define a bottom surface of the panel assembly, and a lighting device mounted on the lower bracket to emit light to the panel. A bracket opening through which the lighting device is accessible is defined in the lower bracket.