Cornutus may refer to:
- Lucius Annaeus Cornutus, a Stoic philosopher, flourished in the reign of Nero (c. 60 AD), when his house in Rome was a school of philosophy
- Cornutus (plural: cornuti), a part of the aedeagus of the genitals of male Lepidoptera (butterflies and moths)
- Latin binomial abbreviations for species
- A. cornutus (disambiguation)
- B. cornutus (disambiguation)
- C. cornutus (disambiguation)
- D. cornutus
- E. cornutus (disambiguation)
- H. cornutus
- L. cornutus (disambiguation)
- M. cornutus (disambiguation)
- N. cornutus (disambiguation)
- O. cornutus (disambiguation)
- P. cornutus (disambiguation)
- R. cornutus
- S. cornutus (disambiguation)
- T. cornutus (disambiguation)
- Z. cornutus