An endoscope 2 that can stably transmit an optical signal is provided. The endoscope 2 includes an insertion section 80 in which a rigid distal end portion 81, a bending section 82 for changing a direction of the rigid distal end portion 81, and a flexible portion 83 are concatenated and an optical fiber 50 that transmits an optical signal, the optical fiber 50 being inserted through an inside of the insertion section 80. The rigid distal end portion 81 is provided with an image pickup device 90, an optical element 10 that converts an electric signal outputted by the image pickup device 90 into the optical signal, a holding member 40 including a through-hole 40H, into which a distal end portion of the optical fiber 50 is inserted, and a wiring board 20 on which the optical element 10 is mounted and to which the holding member 40 is joined. The optical fiber 50 is inserted through a center of the bending section 82.
