A dishwasher includes a wash tub, a lower basket, a first upper basket, a second upper basket, and movement parts. The wash tub defines a space in which dishes are washed. The lower basket is disposed in the wash tub. The first upper basket is disposed over the lower basket inside the wash tub to define a first lower reception space together with the lower basket. The second upper basket is disposed over the lower basket side by side with the first upper basket to define a second lower reception space. The movement parts move the first upper basket above or below the second upper basket to increase the first lower reception space.