An optical wiring member according to the present invention includes: a substrate on which a light-emitting device and a light-receiving device are mounted; and an optical waveguide comprising a communication optical waveguide core and an optical waveguide clad that entirely covers the communication optical waveguide core, the optical waveguide being mounted on the substrate, in which the optical waveguide is equipped with a position-aligning light guiding portion for introducing position-aligning light into the communication optical waveguide core. By using, as a target light, the position-aligning light that is introduced into the communication optical waveguide core 3 and exits from the substrate, at least either the light-emitting device or the light-receiving device can be positioned.