Eye shadow (or eyeshadow) is a cosmetic applied primarily to the eyelids to attract attention to the wearer's eyes, making them stand out or look more attractive. Eye shadow can also be applied under the eyes, on the cheeks, or to brow bones.

Civilizations around the world use eye shadow predominantly on females but also occasionally on males. In Western society, it is seen as a feminine cosmetic, even when used by men. In Gothic fashion, black or similarly dark-colored eye shadow and other types of eye makeup are popular among both sexes. In ancient Egypt, it was customarily used by both sexes Kohl, an ancient eye cosmetic, played a prominent role in various cultures and religious practices.

The use of eye shadow attempts to replicate the natural eyelid coloration that some women exhibit due to a natural contrasting pigmentation on their eyelids. Natural eye shadow can range anywhere from a glossy shine on one's eyelids, to a pinkish tone, or even a silver look.