An ice dispenser apparatus includes an ice making mechanism (1) and, an ice storage box (5) for storing ice pieces produced by the ice making mechanism. When the ice pieces are dispensed a discharge port shutter (9) normally closing a discharge port (5c) provided in the ice storage box (5) at a lower portion thereof is opened by a discharge port shutter actuator (11). A transient storage chamber (13) is provided in communication with the discharge port (5c), the chamber having a normally closed aperture for transiently storing a predetermined amount of ice pieces discharged from the ice storage box (5) through the discharge port (5c) when the discharge port shutter (9) is opened. A transient storage chamber shutter (10) is provided in association with the transient storage chamber (13) and is adapted to be actuated by a transient storage chamber shutter actuator (12) for selectively opening or closing the aperture. The discharge port shutter (9) and the transient storage chamber shutter (9) are opened and closed by the associated actuators (11, 12), respectively, in such a manner that the predetermined amount of ice pieces is temporarily stored once within the transient storage chamber (13) before being dispensed therefrom.