Cornu (pl. cornua) is a Latin word for horn. Cornu may also refer to:

Cornu (horn), an ancient musical instrument

People Cornu (surname)

Places Cornu, Prahova, a commune in Prahova County, Romania Cornu Luncii, a commune in Suceava County, Romania Cornu, a village in Bucerdea Grânoasă Commune, Alba County, Romania Cornu, a village in Orodel Commune, Dolj County, Romania Cornu de Jos (disambiguation), multiple places Cornu–, a prefix used to indicate a relation to Cornwall

Science and medicine Euler spiral, also known as a Cornu spiral Latin name for a cutaneous horn, an eruption of the skin, mostly in fair skinned persons which can be benign but is often a precursor of skin cancer

Anatomy Cornu ammonis, a part of the hippocampus of the brain Cornu coccygeum, one of two upward projecting processes which articulate with the sacrum Cornua of the hyoid, the greater and lesser horns of the hyoid bones Cornu anterius and cornu posterius, parts of the lateral ventricles of the brain Horns of the spinal cord Cornu anterius medullae spinalis Cornu posterius medullae spinalis Sacral Cornua, two small processes projecting inferiorly on either side of the sacral hiatus leading into the sacral canal Uterine cornu, one of two uterine horns, located near the entry of the fallopian tube

Zoology Cornu (gastropod), a genus of snails Cornu aspersum, species of brown garden snail, formerly known as Helix aspersa One of two horn claspers associated with the penis of a bee drone

See also Le Cornu, a surname Corneanu (disambiguation) Cornetu (disambiguation) Corni (disambiguation) Cornus (disambiguation) Horn (disambiguation)