An optical communication device is provided that includes a flex-rigid substrate including a flexible substrate provided with an electric wiring, and a pair of rigid sections provided on both sides of the flexible substrate. The pair of rigid sections each includes a lamination formed of a conductive circuit and an insulating layer. The optical communication device also includes optical communication means made of a flexible material and having both end faces substantially perpendicular to its optical path of transmitting, and a pair of optical elements having their respective optical functional portions that are mounted on the rigid sections of the flex-rigid substrate. Both end portions of the optical communication means are disposed and fixed on the rigid sections, and at least one of the end faces is optically coupled with at least one of the optical functional portions of the optical elements through a coupling optical element.