Loop or LOOP may refer to:

Brands and enterprises

Loop (mobile) Loop or LOOP may refer to: Brands and enterprises * Loop (mobile), a Bulgarian virtual network operator and co-founder of Loop Live * Loop, clothing, a company founded by Carlos Vasquez in the 1990s and worn by Digable Planets * Loop Mobile, ...

, a Bulgarian virtual network operator and co-founder of Loop Live * Loop, clothing, a company founded by Carlos Vasquez in the 1990s and worn by

Digable Planets Digable Planets () is an American hip hop trio formed in 1987. The trio is composed of rappers Ishmael "Butterfly" Butler, Mariana "Ladybug Mecca" Vieira, and Craig "Doodlebug" Irving. The group is notable for their contributions to the subgenre ...

* Loop Mobile, an Indian mobile phone operator * Loop, a reusable container program announced in 2019 by TerraCycle

Geography

* Loop, Germany, a municipality in Schleswig-Holstein *

Loop (Texarkana) The Loop is a beltway around Texarkana, TX and Texarkana, AR, which are twin cities in the U.S. states of Arkansas and Texas. Consisting of a section of Interstate 49 (I-49) in Arkansas, and Loop 151 and a section of I-369 and U.S ...

, a roadway loop around Texarkana, Arkansas, United States * Loop, Blair County, Pennsylvania, United States *

Loop, Indiana County, Pennsylvania Loop was an unincorporated community in West Mahoning Township, Indiana County, Pennsylvania. The community was named for its location near a loop in the meander A meander is one of a series of regular sinuous curves in the Channel (geograph ...

, United States *

Loop, West Virginia Loop is an unincorporated community in Jackson County, West Virginia West Virginia is a state in the Appalachian, Mid-Atlantic and Southeastern regions of the United States.The Census Bureau and the Association of American Geographers c ...

, United States * Loop 101, a semi-beltway of the Phoenix Metropolitan Area * Loop 202, a semi-beltway of the Phoenix Metropolitan Area * Loop 303, a semi-beltway of the Phoenix Metropolitan Area *

Chicago Loop The Loop, one of Chicago's 77 designated community areas, is the central business district of the city and is the main section of Downtown Chicago. Home to Chicago's commercial core, it is the second largest commercial business district in Nort ...

, the downtown neighborhood of Chicago bounded by the elevated railway The Loop **

Loop Retail Historic District Loop Retail Historic District is a shopping district within the Chicago Loop community area in Cook County, Illinois, United States. It is bounded by Lake Street to the north, Ida B. Wells Drive to the south, State Street to the west and Wab ...

, a shopping district in the Chicago Loop *

Delmar Loop The Delmar Loop, often referred to by St. Louis residents simply as The Loop, is an entertainment, cultural and restaurant district in University City, Missouri and the adjoining western edge of St. Louis near Washington University in St. Louis an ...

, an entertainment district in St. Louis, Missouri * London Outer Orbital Path (LOOP), a signed walk around the edge of Outer London, England *

Louisiana Offshore Oil Port The Louisiana Offshore Oil Port (LOOP) is a deepwater port in the Gulf of Mexico 29 kilometers (18 nautical miles) off the coast of Louisiana near the town of Port Fourchon. LOOP provides tanker offloading and temporary storage services for cr ...

(LOOP), a deep-water port in the Gulf of Mexico off the coast of Louisiana

People

* Call Me Loop (born 1991), English singer and songwriter *

Liza Loop Liza Loop (née Straus) is an educational technology pioneer, futurist, technical author, and consultant. She is notable for her early use of computers in education, her creation of a public-access computer center, consulting work with Atari, Apple ...

, American technology pioneer * Uno Loop (1930–2021), Estonian singer, musician, athlete, actor, and educator

Arts, entertainment, and media

Film

* ''Loop'' (1991 film), a British romantic comedy * ''Loop'' (1999 film), a Venezuelan film * ''Loop'' (2020 film), an American animated short * Film loop, the slack portion of the film around the projector lens in a

movie projector A movie projector is an opto-mechanical device for displaying motion picture film by projecting it onto a screen. Most of the optical and mechanical elements, except for the illumination and sound devices, are present in movie cameras. Mod ...

Porn loop Pornographic films (pornos), erotic films, sex films, and 18+ films are films that present sexually explicit subject matter in order to arouse and satisfy the viewer. Pornographic films present sexual fantasies and usually include erotica ...

, an 8 or 16 mm video "short" of a pornographic nature that could be purchased from men's magazines starting in the 1950s

Music

Groups

Loop (band) Loop are an English rock band, formed in 1986 by Robert Hampson in Croydon. The group topped the UK independent charts with their albums ''Fade Out'' (1989) and '' A Gilded Eternity'' (1990). Their dissonant "trance-rock" sound drew on the wo ...

, a London rock band

Other uses in music

* ''Loop'' (album), a 2002 album by Keller Williams *

Loop (music) In music, a loop is a repeating section of sound material. Short sections can be repeated to create ostinato patterns. Longer sections can also be repeated: for example, a player might loop what they play on an entire verse of a song in order to ...

, a finite element of sound which is repeated by technical means * "Loop" (song), a song by Maaya Sakamoto * ''Loop'', a 2020 mini-album by

Peakboy Kwon Sung-hwan (; born May 27, 1989), better known by his stage name Peakboy (), is a South Korean rapper, record producer, and singer-songwriter. He released his debut single "Gin & Tonic" in 2017 via SoundCloud and first mini-album ''Portrait ...

Other uses in arts, entertainment, and media

* ''Loop'' (novel), a novel in the ''Ring'' series by Koji Suzuki * LOOP Barcelona, an annual meeting point for video art in Barcelona, Spain * '' Loop Mania'', a mobile arcade video game

Computing and technology

Loop (computing) In computer science, control flow (or flow of control) is the order in which individual statements, instructions or function calls of an imperative program are executed or evaluated. The emphasis on explicit control flow distinguishes an ''im ...

, a method of control flow in computer science * LOOP (programming language), the pedagogical primitive recursive programming language with bounded loops * Loop (telecommunication), sending a signal on a channel and receiving it back at the sending terminal *

Audio induction loop Audio induction loop systems, also called audio-frequency induction loops (AFILs) or hearing loops, are an assistive listening technology for individuals with reduced ranges of hearing. A hearing loop consists of one or more physical loop of ca ...

, an aid for the hard of hearing *

Local loop In telephony, the local loop (also referred to as the local tail, subscriber line, or in the aggregate as the last mile) is the physical link or circuit that connects from the demarcation point of the customer premises to the edge of the common ...

, the physical link in telephony that links the customer premises to the telephone company (telco) *

Loop device In Unix-like operating systems, a loop device, vnd (vnode disk), or lofi (loop file interface) is a pseudo-device that makes a computer file accessible as a block device. Before use, a loop device must be connected to an extant file in the file sys ...

, a Unix device node that allows a file to be mounted as if it were a device * LOOPS, the object system for Interlisp-D

Mathematics

* Loop (algebra), a quasigroup with an identity element *

Loop (graph theory) In graph theory, a loop (also called a self-loop or a ''buckle'') is an edge that connects a vertex to itself. A simple graph contains no loops. Depending on the context, a graph or a multigraph may be defined so as to either allow or disallow ...

, an edge that begins and ends on the same vertex *

Loop (topology) In mathematics, a loop in a topological space is a continuous function from the unit interval to such that In other words, it is a path whose initial point is equal to its terminal point.. A loop may also be seen as a continuous map from t ...

, a path that starts and ends at the same point, possibly reduced to a single point

Sports

* Loop, a type of playboating maneuver * Aerobatic loop, a type of aircraft aerobatic maneuver * Loop (cricket), an aspect of bowling in cricket * Loop jump, a figure skating jump * Loop, a type of offensive shot in table tennis

Roller coasters

* Loop (roller coaster), a basic roller coaster inversion * Pretzel loop, a roller coaster element

Transportation

* ''Loop'' (Amtrak train), a discontinued Amtrak train *

The Loop (CTA) The Loop (historically Union Loop) is the long circuit of elevated rail that forms the hub of the Chicago "L" system in the United States. As of 2012, the branch has served 74,651 passengers every weekday. The Loop is so named because the eleva ...

, a rapid transit section bounding Chicago's Loop neighborhood * Loop, underground public transportation system of The Boring Company in Tesla cars, including a proposed DC-to-Baltimore system *

Balloon loop A balloon loop, turning loop, or reversing loop ( North American Terminology) allows a rail vehicle or train to reverse direction without having to shunt or stop. Balloon loops can be useful for passenger trains and unit freight trains. Bal ...

, a section of track that allows reversal of direction without stopping *

Circle route A circle route (also circumference, loop, ring route, ring line or orbital line) is a public transport route following a path approximating a circle or at least a closed curve. The expression "circle route" may refer in particular to: * a r ...

, a public transport route that travels around and connecting the peripheral zones of an area. *

Loop line (railway) Loop line has several meanings. * A less important line which leaves a main line and then rejoins it later, continuing in the same direction. Significantly longer than a passing loop, its purpose may be purely to provide a bypassing route, or it m ...

, a branch line that deviates from a direct route and rejoins it at another location *

Loop route In road transportation in the United States, a special route is a road in a numbered highway system that diverts a specific segment of related traffic away from another road. They are featured in many highway systems; most are found in the Int ...

, a main route or highway that forms a closed loop *

Passing loop A passing loop (UK usage) or passing siding (North America) (also called a crossing loop, crossing place, refuge loop or, colloquially, a hole) is a place on a single line railway or tramway, often located at or near a station, where trains o ...

, a short section of track that allows trains to pass on a single track route *

Ring road A ring road (also known as circular road, beltline, beltway, circumferential (high)way, loop, bypass or orbital) is a road or a series of connected roads encircling a town, city, or country. The most common purpose of a ring road is to assist i ...

or loop, a main route or highway that encircles a town or city *

Spiral (railway) A spiral (sometimes called a spiral loop or just loop) is a technique employed by railways to ascend steep hills. A railway spiral rises on a steady curve until it has completed a loop, passing over itself as it gains height, allowing the railw ...

, a section of track that allows a train to climb a steep hill

Other uses

* Loop (biochemistry), a flexible region in a protein's secondary structure *

Loop (education) Looping, in education, refers to the practice of a teacher remaining with the same group of students for more than one school year. For example, a teacher who teaches a third grade class and then goes on to teach the same students, the following ye ...

, the process of advancing an elementary school teacher with his or her class *

Loop (knot) This page explains commonly used terms related to knots. B Bend A bend is a knot used to join two lengths of rope. Bight A bight has two meanings in knotting. It can mean either any central part of a rope (between the standing end ...

, one of the fundamental structures used to tie knots * Loop, a

cul de sac A dead end, also known as a cul-de-sac (, from French for 'bag-bottom'), no through road or no exit road, is a street with only one inlet or outlet. The term "dead end" is understood in all varieties of English, but the official terminology ...

* Loop, a type of

fingerprint A fingerprint is an impression left by the friction ridges of a human finger. The recovery of partial fingerprints from a crime scene is an important method of forensic science. Moisture and grease on a finger result in fingerprints on surfa ...

pattern