An optical connector which includes an insertion opening for inserting therein a plug section of an optical fiber cable. There is an optical element which is to be optically connected to the optical fiber cable as inserted in the insertion opening, and a shutter for opening and closing the insertion opening. The shutter is to be mounted to an apparatus and serves as a connector to the apparatus. The shutter is arranged so as to be distinguishable from an optical connector of other type by the color of the shutter which is exposed to the outside when mounting the optical connector to an apparatus.