A molded interconnect device (MID) optical connector includes a molded plastic body and a metal retaining clip. The body has a receptacle portion shaped to receive and guide a mating optical fiber ferrule into a connected position. In the connected position, the end of a fiber retained in the ferrule is in optical alignment with an opto-electronic device in the MID optical connector. The retaining clip has one or more contact portions that extend into the receptacle portion of the body and exert a spring force upon the ferrule to retain and stabilize it in the connected position.