Agent may refer to:

Espionage, investigation, and law

*, spies or intelligence officers * Law of agency, laws involving a person authorized to act on behalf of another ** Agent of record, a person with a contractual agreement with an insurance policy owner **

Election agent An election agent in elections in the United Kingdom, as well as some other similar political systems such as elections in India, is the person legally responsible for the conduct of a candidate's political campaign and to whom election material is ...

, a person responsible for the conduct of a political campaign **

Free agent In professional sports, a free agent is a player who is eligible to sign with other clubs or franchises; i.e., not under contract to any specific team. The term is also used in reference to a player who is under contract at present but who is a ...

, a sports player who is eligible to sign with any club or franchise **

Literary agent A literary agent is an agent who represents writers and their written works to publishers, theatrical producers, film producers, and film studios, and assists in sale and deal negotiation. Literary agents most often represent novelists, screenwrit ...

, an agent who represents writers and their written works ** Modeling agency, a person or a corporation which represents fashion models ** Press agent, a professional publicist ** Foreign agent, a person who carries out the interests of a foreign country **

Political agent (disambiguation) Political Agent or political agent may refer to: *Political Resident, a representative with consular duties and political contacts with local chiefs *Political officer (British Empire), an officer of the British imperial civil administration, also ...

** Patent attorney, an attorney who represents clients in patent matters **

Real estate agent A real estate agent or real estate broker is a person who represents sellers or buyers of real estate or real property. While a broker may work independently, an agent usually works under a licensed broker to represent clients. Brokers and agen ...

, an intermediary between sellers and buyers of real estate ** Registered agent, in the US, receives service of process for a party in a legal action ** Shipping agent, a person responsible for handling shipments and cargo ** Sports agent, a legal representative for professional sports figures such as athletes and coaches ** Talent agent or booking agent, a person who finds jobs for entertainment professionals ** Trade mark agent, a person who represents clients in trade mark matters ** Travel agent, a retailer that provides travel and tourism related services * Special agent, an American criminal investigator or detective for example

Arts and entertainment

Fictional characters

Agent (comics) The Agent (Rick Mason) is a fictional character appearing in American comic books published by Marvel Comics. Created by James Hudnall and John Ridgway, the character first appeared in ''Marvel Graphic Novel: Rick Mason, The Agent'' #1 (December ...

, a Marvel Comics character * Agent (''The Matrix''), a group of characters in the series * The Agents, superhuman characters in ''

Seven Samurai 20XX is a PlayStation 2 game released by Sammy Studios in 2004. Its story and concept are based upon Akira Kurosawa's 1954 movie '' Seven Samurai''. Rights for the production of the game were given by the Kurosawa production, with character designs b ...

Film and television

* ''The Agent'' (1922 film), featuring Oliver Hardy * ''Agent'' (film), an upcoming spy thriller film * ''Agent'' (TV series), a Polish reality competition

Music

* Agent (band), an American hardcore band from Long Island, New York * Agents (Finnish band), a Finnish schlager/rock'n'roll band * The Agents (Australian band), led by James Griffin * The Agents (English band), a Bristol post-punk band * "Intro: The Agent", by Rhymefest from '' El Che'' (2010) * "The Agent" (Little Man Tate song) (2006)

Other uses in arts and entertainment

* ''Agent'' (video game), a stealth action game

Science and technology

Biology and chemistry

Biological agent A biological agent (also called bio-agent, biological threat agent, biological warfare agent, biological weapon, or bioweapon) is a bacterium, virus, protozoan, parasite, fungus, or toxin that can be used purposefully as a weapon in bioterroris ...

, a bacterium, virus, protozoan, parasite, or fungus used as a weapon * Chemical agent, used as a chemical weapon

Computing

Agent architecture Agent architecture in computer science is a blueprint for software agents and intelligent control systems, depicting the arrangement of components. The architectures implemented by intelligent agents are referred to as cognitive architectures.

, a blueprint for software agents and control systems *

Agent-based model An agent-based model (ABM) is a computational model for simulating the actions and interactions of autonomous agents (both individual or collective entities such as organizations or groups) in order to understand the behavior of a system and wha ...

, a computational model for simulating the actions and interactions of individuals *

Intelligent agent In artificial intelligence, an intelligent agent (IA) is anything which perceives its environment, takes actions autonomously in order to achieve goals, and may improve its performance with learning or may use knowledge. They may be simple or c ...

, an autonomous, goal-directed entity which observes and acts upon an environment * Software agent, a piece of software that acts for a user or other program *

User agent In computing, a user agent is any software, acting on behalf of a user, which "retrieves, renders and facilitates end-user interaction with Web content". A user agent is therefore a special kind of software agent. Some prominent examples of us ...

, software that is acting on behalf of a user

Other uses

Agency (philosophy) Agency is the capacity of an actor to act in a given environment. It is independent of the moral dimension, which is called moral agency. In ''sociology'', an agent is an individual engaging with the social structure. Notably, though, the prima ...

, the capacity of an actor to act in a given environment *

Agency (psychology) In psychology, agents are goal-directed entities that are able to monitor their environment to select and perform efficient means-ends actions that are available in a given situation to achieve an intended goal. Agency, therefore, implies the abilit ...

, an attribute of humans and non-human animals *

Agent (economics) In economics, an agent is an actor (more specifically, a decision maker) in a model of some aspect of the economy. Typically, every agent makes decisions by solving a well- or ill-defined optimization or choice problem. For example, ''buyers'' (c ...

, an actor and decision maker in a model * Agent (grammar), in linguistics, the thematic relation of a cause or initiator to an event *

Agent noun In linguistics, an agent noun (in Latin, ) is a word that is derived from another word denoting an action, and that identifies an entity that does that action. For example, "driver" is an agent noun formed from the verb "drive". Usually, ''derive ...

, a word identifying an actor, derived from a word denoting an action * Cleaning agent, a substance used to remove bad smells, clutter, dirt, dust, or stains on surfaces