is a pupal casing made by moths, caterpillars and other insect larvae.
Cocoon may also refer to:
- Apache Cocoon, web development software
- Cocoon (film), a 1985 science fiction film
- Kakuna, a fictional species of Pokémon, known as Cocoon in the original Japanese version
- "Cocoon", a short story from the collection Luminous, by science fiction writer Greg Egan