An endoscope includes: an objective optical unit； an illumination optical system including an illumination lens； and a distal end portion body included in a distal end portion, and the objective lens barrel includes a first lens barrel and a second lens barrel, the first lens barrel includes a disposition hole, an inward projection portion and an outward projection portion, the second lens barrel includes a reception hole, a light input surface and a first distal end face are arranged in a same plane by a beveled surface of a beveled portion being in surface contact with a lens positioning surface of the inward projection portion, and the first distal end face and a second distal end face are arranged in a same plane by a first barrel positioning surface being in surface contact with an objective optical unit positioning surface.
