Cornelian (usually spelled "carnelian") is a reddish-brown variety of the mineral chalcedony.
Cornelian may also refer to: Cornelian automobile, a 1914 racing vehicle Cornelian Bay (disambiguation), multiple places Cornelian dilemma, a dilemma named after dramatist Pierre Corneille Cornelia (gens), an important gens in ancient Rome Deudorix epijarbas, an Asian butterfly A variety of plants in the dogwood family including Cornus florida Cornelian cherry Japanese cornelian cherry
See also Cornellian, a term used to describe people affiliated with Cornell University