An endoscope includes an image pickup device inserted into a through hole in a housing, in which the image pickup device includes an optical unit including a distal end lens and optical members, and an image pickup unit, the distal end lens is fixed to a distal end portion of the through hole, the optical members are held by a lens frame, the lens frame being inserted into the through hole, and a part of the lens frame being bonded to the through hole, and the image pickup unit includes a unit frame fixed to the lens frame, a front portion of the unit frame being inserted into the through hole and being bonded to the through hole, and an outer surface of a rear portion of the unit frame including stoppers to which a jig is to be fixed, the rear portion not being inserted into the through hole.
