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:

Places

Code (metadata), data elements whose allowable values can be represented as enumerated lists
Code point, colloquially referred as a [character] code (in some encoding)
Code.org, a non-profit organization and eponymous website that encourages people, particularly students in U.S. schools, to learn computer science
Coding theory, branch of mathematics and computer science dealing with data transmission
Computer code, set of instructions forming a computer program which is executed by a computer.
Encoding (memory), store and recall information
Machine code, a sequence of instructions to a processor unit
Source code, a sequence of statements and/or declarations written in some human-readable (usually as a text) computer programming language
<code></code>, an HTML element

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
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 which humans can transmit letters using only short and long pulses
Nomenclature codes, rulebooks of scientific naming convention
Serial code or serial number

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, such as a U.S. state, a Canadian province, a German Bundesland, or a municipality
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 (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

Code (audio standard), or ΧΟΔΕ, high-fidelity audio disc brand developed by T-Bone Burnett
Code of non-infringement or The Code, of clowns and other performers
Motion Picture Production Code or Hays Code, the voluntary US films censorship guidelines from 1930 to 1968