Cornutus () may refer to:

Ancient Rome Servius Sulpicius Camerinus Cornutus, consul in 500 BC Quintus Sulpicius Camerinus Cornutus (consul), consul in 490 BC Servius Sulpicius Camerinus Cornutus (consul 461 BC) Quintus Sulpicius Camerinus Cornutus (consular tribune), consular tribune in 402 and 398 BC Marcus Caecilius Cornutus, urban praetor in 43 BC Lucius Annaeus Cornutus (fl. c. 60 AD), a Stoic philosopher under emperor Nero Gaius Julius Cornutus Tertullus, suffect consul in 100 AD and a friend of Pliny the Younger Quintus Fuficius Cornutus, suffect consul in 147 AD Gaius Julius Plancius Varus Cornutus, the last descendant of Herod the Great

Biology Species of numerous genera, including: Dipterocarpus cornutus, a species of tree Turbo cornutus, a species of sea snail Cornutus (plural: cornuti), a part of the aedeagus of the male lepidoptera genitalia (butterflies and moths)

See also List of Roman cognomina