An endoscope includes a plate member to which a member be operated to bend a bendable portion is fixed and which includes a through hole, and a tubular unit formed in a tubular shape to make a fluid flow and including a coupling portion which functions as a protruding portion disposed so as to be protruded from an outer surface. The endoscope further includes a positioning mechanism which positions the plate member and the tubular unit relative to each other so as to dispose the protruding portion around a periphery of the through hole including the through hole.
