An optical waveguide device includes an optical-electrical hybrid substrate and a lens component mounted on the optical-electrical hybrid substrate. The optical-electrical hybrid substrate includes a wiring substrate and an optical waveguide on the wiring substrate. An optical path changer is arranged on an end of the optical waveguide. The optical waveguide includes an opening configured to expose a connection pad of the wiring substrate. The lens component includes a component body including a conductive member receptacle at a position corresponding to the opening of the optical waveguide. The lens component includes a conductive member partially accommodated in the conductive member receptacle and configured to connect the lens component to the connection pad.