An endoscope includes an opto-electric composite module, an optical fiber, and a plurality of electric cables each including a core wire and a shielding wire. The opto-electric composite module includes a light emitting device, a wiring board including a plurality of bonding electrodes to which the plurality of core wires are bonded, a ferrule causing the optical fiber inserted into a first through hole to be optically coupled to the light emitting device, and a cable holder having grooves to which the plurality of core wires are fixed with the plurality of core wires so disposed as to be bonded to the plurality of respective bonding electrodes. The cable holder is a holder conductor electrically connected to a ground potential electrode of the image pickup device, and the shielding wires in the electric cables are bonded to the holder conductor of the cable holder via an electrically conductive member.