Provided herein is a refrigerator with an improved coupling structure of a heat dissipation duct for dissipating heat generated in a display unit and having and applying the improved heat dissipation duct to a door having a thin thickness such that a problem in which a curve is generated at an exterior of a door when an inside of the door is filled with a heat insulating material is prevented. The refrigerator includes a main body, and a door, wherein the door includes a door cap coupled to at least one of an upper portion and a lower portion of the door, a display unit provided at a front surface of the door, a heat dissipation cover arranged behind the display unit, and a heat dissipation duct slidably inserted into the door through the at least one of the upper portion and the lower portion of the door.