Other
- Code Red (computer worm), a 2001 computer worm
- Code Red II (computer worm), a 2001 computer worm
- Code Red, an emergency alert code used in hospitals
- a cherry-flavored variant of the soft drink Mountain Dew
- Code red, a euphemism for extrajudicial punishment and a central plot element of the film A Few Good Men
- Redcode, the programming language used in the programming game Core War
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