A wall mounted washing machine and a door gasket thereof are provided to reduce manufacturing costs and solve the problem of the cost increase incurred in the assembling process. The wall mounted washing machine includes: a rear panel mounted on a wall; a tub supported on the rear panel, the tub being filled with wash water; a front panel having an opening formed therein and installed in the tub; a drum rotatably installed in the tub; a cover installed on the front panel to cover the front panel; a door rotatably coupled to the cover to open or close a laundry inlet of the cover; and a door gasket disposed between the cover and the front panel, maintains a watertight seal by making contact with the door, and forms a gap between the surface of the cover and a gasket extension or gasket fixing portion with respect to the laundry inlet.
