Disclosed is a dishwasher comprising a dishwasher comprising a cabinet comprising a lateral panel and a top panel for defining an exterior appearance, a tub provided in the cabinet and providing a washing space, a door coupled to a front of the tub and opening and closing the washing space, and a weight balance coupled to a top surface of the tub and preventing the cabinet from tumbling down when the door is open, wherein the weight balance comprises a body coupled to the top surface of the tub, and an extended portion extended from each of lateral surfaces of the body and spaced a preset distance apart from the lateral panel.