An endoscope includes an image acquisition device, an objective optical system having a predetermined optical axis, first and second light guiding members that emit first and second illumination light, first and second optical systems that refract the first and second illumination light to intersect with the optical axis of the objective optical system, and a tube-like inserted portion having a distal end. The first and second optical systems are disposed at substantially mirror symmetrical positions at the distal end having a shoulder portion that becomes narrower toward the tip. When viewed from the optical axis direction of the objective optical system, the inclination directions at substantially the center of the outer surfaces of the first and second optical systems and straight lines that pass through the center of the objective optical system and the centers of the first and second optical systems form angles of 30° or less.
