A dishwasher is provided, in which a plurality of filters are modularized to extend their effective area and improve their efficiency. The dishwasher includes a tub formed at an inside of the cabinet, forming a washing space where the dishes are washed; and a sump assembly provided at a lower side of the tub and provided with a filter chamber to which a filter module is inserted. The filter module filters the washing water, and includes a plurality of drainage filters.