A dishwasher is disclosed which includes a washing cabinet, a frame disposed within the washing cabinet, and a basket, which is placed on the frame, and whose height is adjustable by a back and forth movement. With this construction, there is no need to lift the basket, rotate it 90°, and reposition the basket to adjust a height of the basket. Rather, it is possible to adjust the height of the basket by a simple operation of pulling the basket forward or pushing it rearward.