A washed rice producing apparatus includes a frame; a first tubular member, arranged within the frame, for defining a rice-washing chamber therein for washing polished rice introduced therein from one end thereof, the rice-washing chamber having a discharge end portion; an agitating member, arranged in the first tubular member, for agitating the polished rice in the rice-washing chamber; a spiral member supported on the frame to be rotatable about an axis thereof for transporting washed, polished rice discharged from the discharge end portion of the rice-washing chamber while dewatering the washed polished rice; and a second tubular member provided in the frame to be rotatable about the axis and to externally surround the spiral member for defining a dewatering chamber in cooperation with the spiral member, the second tubular member including a circumferential wall having many penetrating holes formed therethrough for draining off water separated from the washed polished rice transported by the spiral member. The washed rice producing apparatus is capable of reducing the installation space thereof.