Identity

Identity could mean:

Philosophy

 Identity (philosophy) is the sameness of two things.
 Identity theory of mind, in the philosophy of mind, holds that the mind is identical to the brain
 Personal identity

Mathematics

An identity is an equality that holds regardless of the values of its variables.
An identity object is an entity that does not change other objects; identity function, identity element and identity matrix

Social science and psychology

Identity (social science). In the social sciences, identity has specific meanings, stemming from cognitive theory, sociology, politics, and psychology.
Cultural identity is a person's self-affiliation (or categorization by others) as a member of a cultural group.
Gender identity is the gender with which a person identifies (or is identified by others).
Digital identity is the representation of identity in terms of digital information.
Online identity is the digital identity established by computer network users.
Psychological identity is the concept that an individual has a unique identity developed relatively late in history.

Business
An accounting identity is a basic accounting formulation that must, by construction, hold; for example, the balance sheet of a company must balance. The term may also be used to apply to formulations in economics that have the same characteristics, for example, the balance of payments must balance.
Corporate identity is the physical manifestation of a business brand.
Identity theft is the deliberate appropriation of someone else's identity (without that person's permission) for criminal purposes.

Computer science

Identity (object-oriented programming), a property of objects that allows those objects to be distinguished from each other.
Identity column in SQL Server represents a database field whose values are automatically generated by the server, and uniquely identify a row in the table.

Religion
 Christian Identity, a controversial religious belief which holds that Europeans and their descendents are the Biblical Israel

Television, film, music and literature

Identity (novel), a novel written by Milan Kundera
Identity (movie), a movie directed by James Mangold, starring, among others, John Cusack
Identity (album), an album from Zee with Richard Wright and Dave Harris
Identity (music), a transformation of pitches in music
Identity (game show), a game show on NBC hosted by Penn Jillette

Related pages
 Secret identity
 identity card
 Identification