Disclosed is a washing machine having a plurality of washing space portions. According to the present invention, the washing machine includes: a first housing having a first laundry inserting opening formed on the front side thereof; a first tub disposed in the interior of the first housing; a second housing having a second laundry inserting opening formed on the top side thereof and disposed over the first housing; a second tub disposed in the interior of the second housing; and a water supply part disposed on the second housing in such a manner as to be connected to an external water supply source to supply washing water to the first tub and the second tub, wherein the water supply part comprises a water supply connector having a plurality of chambers formed therein, a first water supply hose for connecting the water supply connector and the first tub, and a second water supply hose for connecting the water supply connector and the second tub.