An endoscope includes a grasp section. The grasp section includes: a first surface adjacent, in the longitudinal axis, to a surface where the bending operation knob is provided, a protruding portion radially outwardly protruding to the longitudinal axis at a position adjacent to the first surface around the longitudinal axis, a first inclined surface provided on the protruding portion at a side adjacent to the first surface and inclined to the first surface, and a second inclined surface which is provided, on the protruding portion, at a side opposite to the first inclined surface across the protruding portion, and which is inclined to the first surface.