Endoscope

An endoscope comprising:

• an insert part that is inserted into body cavity;
• an imaging element that has an imaging region of a substantially rectangular shape at the insert part;
• an observation window that is provided at a distal end part of the insert part to introduce light from an object to the imaging element;
• and
• first, second, and third illumination members that are provided around the observation window on a distal end face of the distal end part to illuminate the object, the first and the second illumination members being arranged near adjoined first and second sides of the substantially rectangular shape respectively, and the third illumination member being arranged near a second angle of the substantially rectangular shape that opposes to a first angle which is an intersection of the first and the second sides.