Controller may refer to:

Occupations

* Controller or financial controller, or in government accounting

comptroller A comptroller (pronounced either the same as ''controller'' or as ) is a management-level position responsible for supervising the quality of accounting and financial reporting of an organization. A financial comptroller is a senior-level exec ...

, a senior accounting position * Controller, someone who performs

agent handling In intelligence organizations, agent handling is the management of so-called agents (called secret agents or spies in common parlance), principal agents, and agent networks (called " assets") by intelligence officers typically known as case ...

in espionage *

Air traffic controller Air traffic control specialists, abbreviated ATCS, are personnel responsible for the safe, orderly, and expeditious flow of air traffic in the global air traffic control system. Usually stationed in air traffic control centers and control ...

, a person who directs aircraft

Computing and electronics

Model–view–controller Model–view–controller (MVC) is a software architectural pattern commonly used for developing user interfaces that divide the related program logic into three interconnected elements. This is done to separate internal representations of infor ...

, an architectural pattern used in software engineering * Controller (computing) (disambiguation) *

Microcontroller A microcontroller (MCU for ''microcontroller unit'', often also MC, UC, or μC) is a small computer on a single VLSI integrated circuit (IC) chip. A microcontroller contains one or more CPUs ( processor cores) along with memory and programma ...

, a small computer on a single integrated circuit *

Game controller A game controller, gaming controller, or simply controller, is an input device used with video games or entertainment systems to provide input to a video game, typically to control an object or character in the game. Before the seventh generation ...

, an input device used for playing video games

Control engineering

Control theory Control theory is a field of mathematics that deals with the control of dynamical systems in engineered processes and machines. The objective is to develop a model or algorithm governing the application of system inputs to drive the system to a ...

, control of continuously operating dynamical systems in engineered processes and

machines A machine is a physical system using power to apply forces and control movement to perform an action. The term is commonly applied to artificial devices, such as those employing engines or motors, but also to natural biological macromolecul ...

Irrigation controller An irrigation controller is a device to operate automatic irrigation systems such as lawn sprinklers and drip irrigation systems. Most controllers have a means of setting the frequency of irrigation, the start time, and the duration of watering. ...

, a device to automate irrigation systems **

PID controller A proportional–integral–derivative controller (PID controller or three-term controller) is a control loop mechanism employing feedback that is widely used in industrial control systems and a variety of other applications requiring continuou ...

, a control loop feedback mechanism *

Control loop A control loop is the fundamental building block of industrial control systems. It consists of all the physical components and control functions necessary to automatically adjust the value of a measured process variable (PV) to equal the value of ...

, contains all the control elements for controlling a process variable **

Anti-lock brake controller An anti-lock braking system (ABS) is a automobile safety, safety anti-Skid (automobile), skid Brake, braking system used on aircraft and on land motor vehicle, vehicles, such as cars, motorcycles, trucks, and buses. ABS operates by preventing t ...

, in an anti-lock braking system *

Industrial control system An industrial control system (ICS) is an electronic control system and associated instrumentation used for industrial process control. Control systems can range in size from a few modular panel-mounted controllers to large interconnected and in ...

, a general term used in industrial process control *

Proportional control Proportional control, in engineering and process control, is a type of linear feedback control system in which a correction is applied to the controlled variable, and the size of the correction is proportional to the difference between the desi ...

, a type of linear feedback control system

Biomedical

Elite controllers Long-term nonprogressors (LTNPs), sometimes also called elite controllers, are individuals infected with HIV, who maintain a CD4 count greater than 500 without antiretroviral therapy with a detectable viral load. Many of these patients have been ...

, individuals who do not develop AIDS after exposure to HIV

Fiction

* Controller (comics), multiple characters **

Controller (Marvel Comics) Controller (Basil Sandhurst) is a supervillain appearing in American comic books published by Marvel Comics. The character is usually depicted as an enemy of Iron Man. Publication history Controller first appeared in ''Iron Man'' #12 and was cr ...

, a fictional character in Marvel Comics **

Controllers (DC Comics) The Controllers are a fictional extraterrestrial race existing in the DC Universe. They first appear in '' Adventure Comics'' #357 (June 1967), and were created by Jim Shooter, Mort Weisinger, and Curt Swan. Fictional character biography Pre ...

, a fictional extraterrestrial race in the DC Universe *

The Fat Controller The Fat Controller, whose real name is Sir Topham Hatt, is a fictional character in ''The Railway Series'' books written by the Reverend W. Awdry and his son, Christopher Awdry. In the first two books in the series (''The Three Railway Engines ...

(Sir Topham Hatt), the head of the railway in ''The Railway Series'' of books written by the Reverend W.V. Awdry, also The Thin Controller and The Small Controller on other railway lines in those books * Controller, a being controlled by a Yeerk in the ''

Animorphs ''Animorphs'' is a science fantasy series of children's books written by Katherine Applegate and her husband Michael Grant, writing together under the name K. A. Applegate, and published by Scholastic. It is told in first person, with all ...

'' series by K.A. Applegate * ''The Controller'', an AI system in the ''

Armored Core 3 is a 2002 third-person shooter mecha video game developed by FromSoftware for the PlayStation 2. It is the sixth entry in the '' Armored Core'' series. ''Armored Core 3'' acts as a reboot for the franchise and begins a storyline that would cont ...

'' video game

Music

* ''Controller'' (Misery Signals album), 2008 * ''Controller'' (British India album), 2013 *

The Controllers (R&B band) The Controllers are an American soul and R&B vocal group, originally from Birmingham, Alabama, who had a series of successful recordings in the late 1970s and the 1980s. Career Originally part of an eight-member gospel group, the group becam ...

, a 1980s rhythm-and-blues band *

MIDI controller A MIDI controller is any hardware or software that generates and transmits Musical Instrument Digital Interface ( MIDI) data to MIDI-enabled devices, typically to trigger sounds and control parameters of an electronic music performance. They mo ...

, device which allows people or machines to control multiple aspects of audiovisual performances with MIDI messages * "Controller", a song from the 1981 album '' Only a Lad'' by the new-wave band Oingo Boingo * "The Controller", a nickname of musician