# Code (disambiguation)

A code is a rule for converting a piece of information into another object or action, not necessarily of the same sort.
Code may also refer to:

## Computing

* Code (metadata), data elements whose allowable values can be represented as enumerated lists
* Code point, in numerical value used in character encoding
* Code.org, a non-profit organization and website that encourages U.S. school students to learn computer science
* Coding theory, branch of mathematics and computer science dealing with data transmission
* Machine code, a sequence of instructions to a processor unit
* Source code, a sequence of instructions written in some human-readable computer programming language
* Bytecode, a sequence of instructions interpreted by software
* <code></code>, an HTML element

## Science and technology

* Code (coding theory), a subset of cardinality at least two of a Hamming space
* Code (cryptography), device for hiding the meaning of a message
* Code (semiotics), device to carry information in a verbal and/or nonverbal form
* Code (set theory), set with a particular isomorphism to another set
* Barcode, an optical, machine-readable representation of a numeric code that identifies the object to which it is attached
* Baudot code, used in telegraphy
* Diagnosis code, used to translate medical conditions into statistical codes, also used for the purpose of health care planning and reimbursement
* Encoding (memory), storage and recalling of information by organisms
* Genetic code, a correspondence between the structures of messenger RNA and proteins
* Hospital emergency codes, used in hospitals worldwide to alert staff to various emergencies
* Morse code, a method with which humans can transmit letters using only short and long pulses
* Nomenclature codes, rulebooks of scientific naming convention
* Serial code or serial number

## Society and law

* Code (law), body of law written and enforced by a sovereign state
** Legal code (municipal), a body of law written by a regional or local governmental entity
* Building code, set of rules that specify the minimum standards for constructed objects
* Code name, a word or name used to refer to another name, word, project or person
* Ethical code, adopted by a profession, by a governmental or quasi-governmental organ, or by a trade group or other organization
* Code Parish in Latvia

## Arts, entertainment, and media
### Films

* The Code (2001 film), 2001 Linux documentary
* The Code (2002 film), French film
* Thick as Thieves (2009 film) or The Code, 2009 heist film

### Literature

* Code (novel), a 2013 novel by Kathy Reichs
* Code: The Hidden Language of Computer Hardware and Software, a 1999 book by Charles Petzold
* Code and Other Laws of Cyberspace, a 1999 book by Lawrence Lessig
** Code: Version 2.0, a 2006 update to Lessig's 1999 book
* The Code (novel), a novel in the Nick Carter-Killmaster series

### Music

* Code (band), English black metal band
* Codes (band), Irish indie electronic band
* The Code (band), ska punk band
* Code (album), a 1987 album by Cabaret Voltaire
* The Code (album), a 2016 album by Young Noble & Deuce Deuce, or the title song
* The Code (EP), an EP by Monsta X
* U;Nee Code or Code, the 2003 debut album by Korean pop singer U;Nee
* "The Code" (King Von song), 2020
* "Code" (song), a 2022 song by Offset and Moneybagg Yo
* "The Code" (Nemo song), a 2024 song by Nemo

### Television

* The Code (Australian TV series), a 2014–2016 Australian political drama
* The Code (British TV programme), a 2011 British mathematics documentary series from BBC2
* The Code (American TV series), a 2019 American military legal drama
* The Code (game show), British game show
* "The Code" (Smart Guy), a 1997 episode of Smart Guy
* "The Code" (The Amazing World of Gumball), a 2016 episode of The Amazing World of Gumball
* Code: Secret Room, 2016 South Korean TV series
* The Code: Crime and Justice, a 2007 Australian legal documentary program
* The Code (Fear the Walking Dead), an episode of Fear the Walking Dead

### Video games

* Code (video game), a puzzle video game
* Konami Code, a cheat code which appears in mainly Konami video games

### Other uses in arts, entertainment, and media

* Code (audio standard), or ΧΟΔΕ, high-fidelity audio disc brand developed by T-Bone Burnett
* Motion Picture Production Code or Hays Code, the voluntary US films censorship guidelines from 1930 to 1968

## Sports and hobbies

* Code, any one of the distinct games known as football
* Code, a unit of scale in model railroading
* Rugby codes, distinguishing between rugby league and rugby union