A mirror device with a display function includes a display panel, a half mirror, a switching unit, and a direction changing unit. The display panel displays an image. The half mirror is provided on a display surface of the display panel. The switching unit performs switching between a mirror mode operation, in which the display of the image on the display panel is stopped and a mirror surface of the half mirror is used, and a display mode operation in which the image is displayed on the display panel. The direction changing unit changes a direction of the display surface or the mirror surface in response to the switching of the mode operation performed by the switching unit.