According to an embodiment, an ice tray comprising: a tray body configured to provide ice-making spaces configured to retain water; a plurality of partition walls extending upward from a bottom surface of the tray body to define the ice-making spaces; and a vibration-generating unit configured to vibrate the tray body. The vibration-generating unit can include a vibration-generating member configured to generate vibration and a mounting member configured to mount the vibration-generating member to a lower surface of the tray body.