A mount for a crossbow adjustable multiple fiber optic sight with a sight housing and having a plurality of adjustable sight pins. A graduated elevation scale is secured to the sight housing and a graduated slide scale with adjustable clamps is secured to the graduated elevation scale. A mounting bracket having a first base mount is mounted on a cross bow riser and a second base mount is connected to and extends upwardly from the base mount. A bracket fastener is attached to the vertical base mount and has an upper clamping surface and a second horizontal bracket fastener is positioned below the first horizontal bracket panel and including a lower clamping surface. An adjuster screw clamps the two bracket fasteners together so that they are able to clamp onto the graduated slide scale and hold it in an adjusted position with the adjusting screw.