Identity may refer to: *

Identity document An identity document (abbreviated as ID) is a documentation, document proving a person's Identity (social science), identity. If the identity document is a plastic card it is called an ''identity card'' (abbreviated as ''IC'' or ''ID card''). ...

Identity (philosophy) In metaphysics, identity (from , "sameness") is the relation each thing bears only to itself. The notion of identity gives rise to many philosophical problems, including the identity of indiscernibles (if ''x'' and ''y'' share all their proper ...

Identity (social science) Identity is the set of qualities, beliefs, personality traits, appearance, or expressions that characterize a person or a social group, group. Identity emerges during childhood as children start to comprehend their self-concept, and it remains ...

Identity (mathematics) In mathematics, an identity is an equality (mathematics), equality relating one mathematical expression ''A'' to another mathematical expression ''B'', such that ''A'' and ''B'' (which might contain some variable (mathematics), variab ...

Arts and entertainment

Film and television

* ''Identity'' (1987 film), an Iranian film * ''Identity'' (2003 film), an American mystery psychological thriller film * ''Identity'' (2025 film), a Malayalam action-thriller film * ''Identity'' (game show), an American game show * ''Identity'' (TV series), a British police procedural drama television series * "Identity" (''Arrow''), a 2013 episode * "Identity" (''Burn Notice''), a 2007 episode * "Identity" (''Charlie Jade''), a 2005 episode * "Identity" (''Legend of the Seeker''), a 2008 episode * "Identity" (''Law & Order: Special Victims Unit'' episode), a 2005 episode * "Identity" (''NCIS: Los Angeles''), a 2009 pilot episode * "Identity" (''Stewart Lee's Comedy Vehicle''), a 2011 episode

Music

Albums

* ''Identity'' (3T album), 2004 * ''Identity'' (BoA album), 2010 * ''Identity'' (Far East Movement album), 2016 * Identity (Ronnie Laws album), 1990 * ''Identity'' (Robert Pierre album), 2008 * ''Identity'' (Raghav album), 2008 * ''Identity'' (Victon EP), 2017 * ''Identity'' (Zee album), 1984

Songs

* "Identity" (Sakanaction song), 2010 * "Identity" (X-Ray Spex song), 1978 * "Identity", a 1983 song by Bucks Fizz, B-side to " London Town" * "Identity", a 2022 song by Bush, from the album '' The Art of Survival'' * "Identity", a 2020 song by Grandson, from the album ''

Death of an Optimist ''Death of an Optimist'' is the debut studio album by Canadian-American musician Grandson. The album was released on December 4, 2020, through Fueled by Ramen. Background and recording Benjamin's EP, ''A Modern Tragedy, Vol. 3'' was released o ...

'' * "Identity", a 2024 song by MiSaMo, from the EP ''

Haute Couture (; ; French for 'high sewing', 'high dressmaking') is the creation of exclusive custom-fitted high-end fashion design. The term ''haute couture'' generally refers to a specific type of upper garment common in Europe during the 16th to the ...

Other uses in music

Identity (music) In post-tonal music theory, identity is similar to identity in universal algebra. An identity function is a permutation or transformation which transforms a pitch or pitch class set into itself. Generally this requires symmetry. For inst ...

, in post-tonal music theory *

Identity (tuning) In music theory, limits or harmonic limits are a way of characterizing the harmony found in a piece or genre (music), genre of music, or the harmonies that can be made using a particular scale (music), scale. The term ''limit'' was introduced by ...

, an odd member below and including a limit

Publications

* ''Identity'', a defunct quarterly Australian magazine published by the

Aboriginal Publications Foundation The Aboriginal Publications Foundation (APF) was a national Australian Aboriginal organisation that existed from 1970 to 1982, based first in Sydney, New South Wales, and later in Perth, Western Australia. It existed to promote and fund creative ...

(1971–1982) * ''Identity'' (novel), by Milan Kundera, 1998

Business

Accounting identity In accounting, finance and economics, an accounting identity is an equality that must be true regardless of the value of its variables, or a statement that by definition (or construction) must be true. Where an accounting identity applies, any devi ...

, calculation that must be true regardless of its variables *

Brand identity A brand is a name, term, design, symbol or any other feature that distinguishes one seller's goods or service from those of other sellers. Brands are used in business, marketing, and advertising for recognition and, importantly, to create and ...

, the expression of a brand *

Corporate identity A corporate identity or corporate image is the manner in which a corporation, firm or business enterprise presents itself to the public. The corporate identity is typically visualized by branding and with the use of trademarks, but it can also i ...

, the manner a corporation presents itself to the public

Philosophy and social science

, the relation each thing bears only to itself *

Law of identity In logic, the law of identity states that each thing is identical with itself. It is the first of the traditional three laws of thought, along with the law of noncontradiction, and the law of excluded middle. However, few systems of logic are b ...

, that each thing is identical with itself *

Personal identity Personal identity is the unique numerical identity of a person over time. Discussions regarding personal identity typically aim to determine the necessary and sufficient conditions under which a person at one time and a person at another time ...

, the numerical identity of a person over time *

, qualities etc that characterize a person or group * Political identity

Mathematics

, an equality that holds regardless of the values of its variables *

Identity element In mathematics, an identity element or neutral element of a binary operation is an element that leaves unchanged every element when the operation is applied. For example, 0 is an identity element of the addition of real numbers. This concept is use ...

, an element of the set which leaves unchanged every element when the operation is applied *

Identity function Graph of the identity function on the real numbers In mathematics, an identity function, also called an identity relation, identity map or identity transformation, is a function that always returns the value that was used as its argument, unc ...

, a function that leaves its argument unchanged *

Identity matrix In linear algebra, the identity matrix of size n is the n\times n square matrix with ones on the main diagonal and zeros elsewhere. It has unique properties, for example when the identity matrix represents a geometric transformation, the obje ...

, with ones on the main diagonal, zeros elsewhere

Science and technology

Digital identity A digital identity is data stored on Computer, computer systems relating to an individual, organization, application, or device. For individuals, it involves the collection of personal data that is essential for facilitating automated access to ...

, information used by computer systems to represent an external agent *

Identity (object-oriented programming) In object-oriented programming, analysis and design, object identity is the fundamental property of every object that it is distinct from other objects. Objects have identity are distinct even when they are otherwise indistinguishable, i.e. eq ...

, the property of objects that distinguishes them from other objects

Other uses

, or ID