A refrigerator includes a cabinet and a door. The door includes a door body including a door liner, a front plate, a cap decor connected to the door liner and the front plate and having a recessed handle, and an insulator filled between the door liner, the front plate, and the cap decor. The door includes a panel assembly detachably mounted on a front surface of the door body and defining a front surface of the door. The panel assembly includes a panel defining an outer appearance of the front surface of the door and an insertion protrusion protruding backward from the panel and inserted into a front surface of the cap decor when the panel is mounted to restrict the panel assembly. The insertion protrusion extends from the outside of a recessed space of the handle in a direction crossing the recessed space.