An endoscope includes: a distal end portion provided at a distal end of an insertion portion a front-view observation window for observing an insertion direction of the distal end portion, which is provided facing toward the insertion direction a lateral-view observation window for observing a circumferential direction of the distal end portion, which is formed along the outer circumferential lateral surface and has a lateral observation field of view a light-emitting member having an emission end surface for emitting light in a distal end direction of the distal end portion and an illumination reflection portion having a reflection portion formed on a proximal end side with respect to the lateral-view observation window so as to be longer than the emission end surface of the light-emitting member along the circumferential direction of the outer circumferential lateral surface of the distal end portion, the illumination reflection portion reflecting light emitted from the emission end surface of the light-emitting member in the circumferential direction of the distal end portion by the reflection portion, to illuminate an observation field of view side of the lateral-view observation window.
