The air conditioner according to an embodiment of the present disclosure includes: a base panel having a first communication hole formed in one side thereof, and a second communication hole formed in another side thereof; a variable panel disposed under the base panel and changed in shape to open and close the first communication hole and the second communication hole; and a driving device disposed on an upper side of the base panel and changing a position of one side of the variable panel in an up-down direction, so that the variable panel is changed in shape, wherein the variable panel includes: a first cover part disposed under the base panel to open and close the first communication hole; a second cover part disposed under the base panel to open and close the second communication hole; and a variable part disposed between the first cover part and the second cover part, and changing an inclination angle of the first cover part and the second cover part.