Identity

Identity refers to the difference or character that marks off an individual or collective from the rest of the same kind. In other words: identity is selfhood, or the sense of who something or someone or oneself is, or the recurring characteristics that enable the recognition of such an individual or group by others or themself [Wiktionary definition, edited].

Identity is a complex topic, as mainly studied within the disciplines of psychology, sociology and philosophy. The term identity is also used in a much broader context, for example in media, entertainment, business, computing and mathematics, to refer to specific or generalised individuals and groups.

Social sciences

Identity (social science) - personhood or group affiliation in psychology and sociology

Group expression and affiliation

Cultural identity, a person's self-affiliation (or categorization by others) as a member of a cultural group
Identity politics, political arguments that focus upon the self-interest and perspectives of social-interest groups or minorities
National identity, belief in membership of a nationality
Party identification

Racial and ethnocultural

African Australian identity, the objective or subjective state of perceiving oneself as an African Australian
Arab identity, the objective or subjective state of perceiving oneself as an Arab
- Arab Canadian identity is the objective or subjective state of perceiving oneself as an Arab Canadian
Australian Aboriginal identity, the objective or subjective state of perceiving oneself as Aboriginal Australian
Jewish identity, the objective or subjective state of perceiving oneself as a Jew
Māori identity, the objective or subjective state of perceiving oneself as a Māori people
Native American identity, an evolving topic based on the struggle to define "Native American" or "(American) Indian" both for people who consider themselves Native American and for people who do not

Ethno-regional

East Asian identity, the objective or subjective state of perceiving oneself as an East Asian person
Eastern European identity, the objective or subjective state of perceiving oneself as an Eastern European person

Racial classification

Black British identity is the objective or subjective state of perceiving oneself as a black British person
- Black Scottish identity is the objective or subjective state of perceiving oneself as a black Scottish person
Brown identity is the objective or subjective state of perceiving oneself as a brown person
White identity is the objective or subjective state of perceiving oneself as a white person

Philosophy

Identity (philosophy), also called sameness - whatever makes an entity definable and recognizable over time
Law of identity, principle of logic stating that an object is the same as itself
Personal identity, the numerical identity (continuity of existence) of persons through time

Specifications of persons

Identity change
Identity document
Identity theft, the deliberate appropriation of someone else's identity (without that person's permission) for criminal purposes
Personally identifiable information, information that can be used to uniquely identify, contact, or locate a single person

Arts, entertainment, and media

Albums

Identity (3T album), 2004
Identity (BoA album), a 2010 album by BoA
Identity (EP), an EP by Time Is A Thief
Identity (Far East Movement album), 2016
Identity (Robert Pierre album), 2008
Identity (Raghav album), 2008
Identity (Zee album), a 1984 album by Richard Wright and Dave Harris of Zee

Songs

"Identity" (Sakanaction song), a 2010 song by Sakanaction
"Identity" (X-Ray Spex song), a single and song by X-Ray Spex, P. Styrene from the album Germfree Adolescents
"Identity", a 1983 song by Bucks Fizz that is the B-side to "London Town"

Other uses in music

Identity (music), a transformation of pitches in music
Identity (tuning), an odd member below and including a limit

Programs and series

Identity (game show), a game show
Identity (TV series), a British police procedural drama television series

Episodes

"Identity" (Arrow), second episode of the second season of Arrow
"Identity" (Burn Notice), second episode of the USA Network television drama series
"Identity" (Charlie Jade), an episode of the television series Charlie Jade
"Identity" (Legend of the Seeker), an episode of Legend of the Seeker
"Identity", an episode of the TV series Law & Order: Special Victims Unit
"Identity" (NCIS: Los Angeles), the series premiere of NCIS: Los Angeles

Other uses in arts, entertainment, and media

Identity (film), directed by James Mangold and starring John Cusack
Identity (novel), by Milan Kundera
Identity (video game), an upcoming MMORPG
Identity, a journal of the British National Party
iD eNTITY, a Korean style manhwa series created by Son Hee-joon, along with Kim Youn-kyung

Business

Accounting identity, calculation or measurement that must be true regardless of the value of its variables
Brand identity, the qualities associated with a brand
Corporate identity, "persona" of a corporation by way of branding or use of trademarks

Computer science

Decentralized identifiers, a type of identifier that enables a verifiable, decentralized digital identity
Digital identity, representation of a set of claims made by one digital subject about itself or another digital subject
Federated identity, assembled identity of a person's user information, stored across multiple distinct identity management systems
Identity column, database field that uniquely identifies every row in the table and is made up of values generated by the database
Identity management, administrative area that deals with identifying individuals in a system and controlling access to resources by placing restrictions on them
Identity (object-oriented programming), the property of objects that distinguishes them from other objects
Online identity, social identity that an internet user establishes in online communities and websites
Self-sovereign identity (SSI), the user has a means of generating and controlling unique identifiers as well as some facility to store identity data

Mathematics

Identity (mathematics), an equality that holds regardless of the values of its variables
Identity element, a special element in a set or structure with respect to an operator
Identity function, a function that does not alter its argument
Identity matrix, a square matrix with ones on the main diagonal, zeros elsewhere