An endoscope of the present invention includes: a cylindrical member disposed at a distal end of a bending portion of an insertion portion； a wire inserted into the cylindrical member； a protruding portion provided by cutting and bending a predetermined part of an outer peripheral surface of the cylindrical member in a direction of a central axis； an outer peripheral surface-side concave where a distal end portion of the wire is disposed； and a guide groove including an end part face provided at a predetermined position of the outer peripheral surface-side concave, the guide groove being elongated along the central axis and larger in width than a diameter of the wire, the guide groove being configured to guide the wire to the outer peripheral surface-side concave.
