An endoscope includes: a window portion that protrudes by a predetermined dimension along an insertion direction of an endoscope insertion portion from a flat portion provided at a distal end of the endoscope insertion portion an air/water feeding nozzle that ejects a fluid toward the surface of the window portion and an inclined portion formed at a circumferential edge portion of the window portion wherein, a second angle of inclination against the flat portion being an angle in a direction along a second axis orthogonal to a first axis at the center of the window portion is made a larger angle than a first angle of inclination against the flat portion being an angle in a direction along a first axis passing through a center of the window portion and extending in an ejection direction of the fluid ejected from the air/water feeding nozzle.
