Provided is a dishwasher (1). The dishwasher (1) includes a wash tub (4), a lower basket (300), a first upper basket (311), a second upper basket (312), and movement parts (321, 323). The wash tub (4) defines a space in which dishes are washed. The lower basket (300) is disposed in the wash tub (4). The first upper basket (311) is disposed over the lower basket (300) inside the wash tub to define a first lower reception space together with the lower basket. The second upper basket (312) is disposed over the lower basket (300) side by side with the first upper basket (311) to define a second lower reception space. The movement parts (321, 323)move the first upper basket (311) to the second upper basket (312) to increase the first lower reception space.