A distal end cover includes a cover body having a cylindrical shape. The cover body includes first and second body portions, a first opening formed in the first body portion and the second body portion, a second opening that can receive a distal end portion of an insertion portion of an endoscope and is formed on a side opposite to the first body portion with respect to the second body portion, a finger hook portion forming a portion of the first opening, a first thin wall portion forming a portion of the first opening, and a second thin wall portion. When a load is applied to the finger hook portion to expand the first opening, a force in a tensile direction is applied to the first thin wall portion, and a force in a shearing direction is applied to the second thin wall portion.