The present invention relates to a washing machine. A washing machine according to an embodiment of the present invention comprises: a casing for forming the exterior; a tub arranged inside the casing; a drum rotatably provided in the tub to contain laundry; and a water supply/distribution device arranged inside the casing, the water supply/distribution device having a temporary space, in which water flowing in from the outside gathers, a plurality of discharge ports for distributing the water in the temporary space towards a plurality of locations, and a pressure limiting unit for limiting the rise of water pressure in the temporary space.