A projection display, for modulating lights into an optical image through an image display element, thereby projecting the optical image from a projection lens, enlargedly, comprising: a light source, which is configured to emit the lights; an optical integrator, which is configured to equalize illuminance distribution of the lights from the light source; a color separation optic system, which is configured to separate the lights emitted from the optical integrator into a plural number of light components; a relay optic system having a plural number of relay lenses, each of which is configured to relay the light separated by the color separation optic system; and a rotation adjuster, which is provided in at least any one of the plural number of relay lenses, and configured to adjust an inclination angle thereof, with respect to a light axis of the lights emitted from the light source.