Provided is a cover member for an exhibit or display element which makes an exhibit or display element visible as if nothing existed between the exhibit or display element and the viewer and can protect the exhibit or display element. The cover member (3) for an exhibit or display element includes a transparent substrate (31a) and an antireflection film (31b) formed on at least one surface of the transparent substrate. The cover member (3) for an exhibit or display element has a luminous reflectance of 0.5% or less.