The present disclosure relates to a pump for transmitting washing water and generating steam and a dishwasher including the pump. The pump includes a housing; a washing water inlet pipe coupled to the housing to receive washing water; a washing water outlet pipe coupled to the housing to discharge the washing water; an impeller disposed in the housing to discharge the washing water from the washing water inlet pipe to the washing water outlet pipe; a heater coupled to the housing to heat the washing water in the housing and generate steam; a steam discharge pipe to discharge the steam generated by the heater; and a selector valve coupled to the steam discharge pipe to block the discharge of the washing water and allow the steam to be discharged, thereby preventing the discharge of washing water through the steam discharge pipe.