An endoscope includes an insertion portion including an optical transmission module on a distal end portion, and an operation portion, the optical transmission module includes an optical fiber, a light emitting element, a holding member provided with a through-hole, a wiring board in which the light emitting element is bonded to a first main surface and the holding member is joined to the second main surface, and a transparent resin filling a space between a light emitting portion of the light emitting element and a distal end face of the optical fiber, and an entire periphery of a distal end portion of the optical fiber is tapered.
