OEG

OEG may refer to:


 * Occluded eye gunsight, a type of optical sight
 * Oilers Entertainment Group, owners of the NHL's Edmonton Oilers
 * Olfactory ensheathing glia, a type of brain cell
 * Oliver Ernest Goonetilleke, 3rd Governor-General of Ceylon
 * Oberrheinische Eisenbahn, or Upper Rhine Railway Company