A liquid dispenser may include a water tank having a wall opened at an upper side, a pump provided inside the water tank, a water supply pipe connected to the pump to transfer water, a water supply plate provided at a position higher than the wall of the water tank and having a water supply hole communicating with the water supply pipe and an upper surface over which water supplied from the water supply hole flows, and a water guide formed within the opening of the wall of the water tank and spaced apart from and below the water supply plate. The water guide may have a hole to discharge the water dropped from the water supply plate to the water tank and to filter the water.
