Domain

A domain is a geographic area controlled by a single person or organization. Domain may also refer to:

Law and human geography

 * Demesne, in English common law and other Medieval European contexts, lands directly managed by their holder rather than being delegated to subordinate managers
 * Eminent domain, the right of a government to appropriate another person's property for public use
 * Private domain / Public domain, places defined under Jewish law where it is either permitted or forbidden to move objects on the Sabbath day
 * Public domain, creative work to which no exclusive intellectual property rights apply
 * Territory (subdivision), a non-sovereign geographic area which has come under the authority of another government

Science

 * Domain (biology), a taxonomic subdivision larger than a kingdom
 * Domain of discourse, the collection of entities of interest in logical analysis
 * High-field domain (physics) in semiconductors, also called Böer domain
 * Knowledge domain, knowledge within a certain discipline, often formalized as a terminology
 * Magnetic domain (physics), a region within a magnetic material which has uniform magnetization
 * Protein domain (biology), a part of a protein that can exist independently of the rest of the protein chain
 * Social domain, a concept in sociology

Mathematics

 * Domain (mathematical analysis), an open connected set
 * Domain (ring theory), a nontrivial ring without left or right nonzero zero divisors
 * Integral domain, a non-trivial commutative ring without nonzero zero divisors
 * Atomic domain, an integral domain in which every non-zero non-unit is a finite product of irreducible elements
 * Bézout domain, an integral domain in which the sum of two principal ideals is again a principal ideal
 * Euclidean domain, an integral domain which allows a suitable generalization of the Euclidean algorithm
 * Dedekind domain, an integral domain in which every nonzero proper ideal factors into a product of prime ideals
 * GCD domain, an integral domain in which every two non-zero elements have a greatest common divisor
 * Principal ideal domain, an integral domain in which every ideal is principal
 * Unique factorization domain, an integral domain in which every non-zero element can be written as a product of irreducible elements in essentially a unique way
 * Domain of a function, the set of input values for which the (total) function is defined
 * Domain of definition of a partial function
 * Natural domain of a partial function
 * Domain of holomorphy of a function
 * Domain of an algebraic structure, the set on which the algebraic structure is defined
 * Domain of discourse, the set of entities over which logic variables may range
 * Domain theory, the study of certain subsets of continuous lattices that provided the first denotational semantics of the lambda calculus
 * Frequency domain, the analysis of mathematical functions with respect to frequency, rather than time
 * Fundamental domain, subset of a space that contains exactly one point from each orbit of the action of a symmetry group
 * Time domain, the analysis of mathematical functions with respect to time

Information technology

 * Administrative domain
 * Broadcast domain, in computer networking, a group of special-purpose addresses to receive network announcements
 * Collision domain
 * Domain (software engineering), a field of study that defines a set of common requirements, terminology, and functionality for any software program constructed to solve a problem in a given field
 * Application domain, a mechanism used within a Common Language Infrastructure to isolate executed software applications from one another
 * Programming domain, a set of programming languages or programming environments that were engineered specifically for a particular domain (software engineering)
 * Network domain, a named grouping of hosts and servers with managed login, access to resources, and permissions.
 * Domain name, a label that identifies a realm of administrative autonomy, authority, or control within the Internet
 * Attribute domain, the set of values allowed in an attribute.

Places

 * The Domain (Austin, Texas), a shopping mall in Austin, Texas, United States
 * Domain (Hong Kong shopping centre), a shopping mall in Yau Tong, Kowloon, Hong Kong
 * Domain, Manitoba, a hamlet in Manitoba, Canada
 * Domain Precinct, a part of South Yarra in Melbourne, Victoria, Australia

Australian public domains

 * The Domain, Sydney, a large open space near the central business district of Sydney
 * Kings Domain, Melbourne, Victoria
 * Queens Domain, Hobart, Tasmania

New Zealand public domains

 * Auckland Domain: a large inner-city park in Auckland
 * One Tree Hill Domain in Auckland
 * Mount Eden Domain in Auckland
 * Mount Smart Domain in Auckland
 * Mangere Domain in Mangere
 * Hamilton Lake Domain in Hamilton
 * Taumarunui Domain in Taumarunui
 * Ashburton Domain in Canterbury
 * Ocean Beach Domain in Dunedin

Film

 * Domain (2009 film), a French film
 * Domain (2016 film), an American film
 * The Domain (film), a 2019 Portuguese film

Music

 * "Domain", track by John Carpenter from Lost Themes
 * "Domain", a song by KSI from the 2020 album Dissimulation

Other uses

 * Domain, or battlespace, a concept in military operations dividing operating environments into defined components
 * Domain Group, an Australian real estate marketing portal, owner of the brand domain.com.au and others