A refrigerator comprising: a cabinet ; a door configured to open/close the cabinet and having an opening that is penetrated in a front/rear direction; a transparent panel assembly which is mounted to cover the opening and through which the inside of the refrigerator is seen; and a lighting member provided in the door or the cabinet to brighten a rear side of the transparent panel assembly , wherein the transparent panel assembly comprises: a front panel defining an outer appearance of a front surface; a rear panel defining an outer appearance of a rear surface; a spacer made of a metal material and disposed between the front panel and the rear panel to define a periphery of the transparent panel assembly , the spacer being configured to come into contact with the front panel ; a sealant provided to the spacer and configured to form a peripheral surface of the transparent panel assembly between the front panel and the rear panel ; a heater and a heater mounting part on which the heater is mounted, wherein a surface of the front panel is heated when the heater generates heat, wherein the sealant is provided between the rear panel and the heater mounting part , characterized in that the heater mounting part is disposed on an outer surface of the spacer and wherein when the heater generates heat, one side of the front panel , which comes into contact with the spacer , is heated. a cabinet ; a door configured to open/close the cabinet and having an opening that is penetrated in a front/rear direction; a transparent panel assembly which is mounted to cover the opening and through which the inside of the refrigerator is seen; and a lighting member provided in the door or the cabinet to brighten a rear side of the transparent panel assembly , wherein the transparent panel assembly comprises: a front panel defining an outer appearance of a front surface; a rear panel defining an outer appearance of a rear surface; a spacer made of a metal material and disposed between the front panel and the rear panel to define a periphery of the transparent panel assembly , the spacer being configured to come into contact with the front panel ; a sealant provided to the spacer and configured to form a peripheral surface of the transparent panel assembly between the front panel and the rear panel ; a heater and a heater mounting part on which the heater is mounted, wherein a surface of the front panel is heated when the heater generates heat, wherein the sealant is provided between the rear panel and the heater mounting part , characterized in that the heater mounting part is disposed on an outer surface of the spacer and wherein when the heater generates heat, one side of the front panel , which comes into contact with the spacer , is heated. a front panel defining an outer appearance of a front surface; a rear panel defining an outer appearance of a rear surface; a spacer made of a metal material and disposed between the front panel and the rear panel to define a periphery of the transparent panel assembly , the spacer being configured to come into contact with the front panel ; a sealant provided to the spacer and configured to form a peripheral surface of the transparent panel assembly between the front panel and the rear panel ; a heater and a heater mounting part on which the heater is mounted, wherein a surface of the front panel is heated when the heater generates heat, wherein the sealant is provided between the rear panel and the heater mounting part , characterized in that the heater mounting part is disposed on an outer surface of the spacer and wherein when the heater generates heat, one side of the front panel , which comes into contact with the spacer , is heated. <EOS>