Provided are a guard assembly that is rotatably installed at a rear side of a door of a refrigerator and the refrigerator including the same. The guard assembly in accordance with an embodiment, is installed at a rear side of a door of a refrigerator. The guard assembly includes a body portion which is placed at the rear side of the door and to which a supporting tray is coupled, and a rotation unit that causes the body portion to be rotatably coupled to the door. The rotation unit includes a guide member having a coupling hole and coupled to one side of the rear side of the door, and a hinge member having one side coupled to the body portion and another side rotatably coupled to the coupling hole.