Disclosed is a washing machine including: a plurality of nozzles provided in an inner circumferential surface of a gasket body to spray water into a drum; a pump configured to pump water discharged from a tub; a distribution pipe supplying the water, pumped by the pump, to the plurality of nozzles; and a circulation pipe connecting the distribution pipe and the pump, wherein the pump is disposed in one side of left and right sides with reference to the inlet port, wherein the circulation pipe is bent at least once, wherein the inlet port includes a first positioning protrusion protruding from an outer circumferential surface of an inlet pipe coupled to the circulation pipe, and wherein a first positioning groove allowing the first positioning protrusion to be inserted thereinto is formed at one end of the circulation pipe, and accordingly, misassembling of the circulation pipe may be prevented.