Abstract: An omnidirectional fiber optic laser beam sensing apparatus for particular use in detecting the elevation of a light beam. A plurality of optical fibers are arranged to receive light from a plurality of separate elevation zones and to transmit the light to a lesser plurality of phototransducers located within a grounded enclosure. The fibers corresponding to each elevation zone are grouped into separate fiber bundles and oriented to direct the light to a common phototransducer, whereby each phototransducer senses light received within a separate elevation zone.