A vehicle mirror with an image display function includes a half mirror and an image display device, the half mirror includes an nλ/4 retardation film and a reflection layer, n is 1, 3, 5, or 7, the nλ/4 retardation film, the reflection layer, and the image display device are disposed in this order in the mirror with an image display function, and the reflection layer is a linear polarization reflection layer or a circular polarization reflection layer.