An illumination system for weapon optics includes a light source and one or more channels that direct light from the light source onto adjustment interfaces of a weapon optical device, such as windage and elevation turrets of a scope. An illumination system for weapon optics may also include an illuminated level device for positioning the weapon level in relation to the surface of the earth. An illumination system for weapon optics illuminates the level device and/or adjustment interfaces of a weapon optical device such that the level device and/or markings on the adjustment interfaces can be read in low-light and no-light conditions.