A washing machine includes a cabinet that defines a first introduction port. The washing machine further includes a tub that is located in the cabinet and that defines a second introduction port that is concentrically positioned relative to the first introduction port. The washing machine further includes a cabinet door that is connected to the cabinet and that is configured to open and close the first introduction port. The washing machine further includes a tub door that is hingedly coupled to the tub, that is configured to open and close the second introduction port, and that includes an upper portion that is inclined toward the tub.
