A pet water dispenser may include a water tank, a pump installed inside the water tank, a water supply pipe connected to the pump to transfer water, and a water supply plate provided at a position higher than an upper end of the water tank and through which water supplied from the water supply pipe flows. The water supply plate may be provided to be spaced apart and above a water guide configured to catch water falling from an edge of the water supply plate and to guide the dropped water back into the water tank.