A washing machine is provided, The washing machine includes a first housing; a second housing disposed on the first housing; a first tub covered by the first housing and having a first opening formed at a front surface; a second tub covered by the second housing and having a second opening formed at an upper surface; a drain path provided to drain wash water of the first tub and wash water of the second tub and having at least one portion located at a position higher than a maximum water storage height of the second tub; and a connector coupled to the first housing and disposed at one portion of the drain path where wash water of the first tub and wash water of the second tub are joined.