Loop Trolley's Westbound City Limit Stop, Dec

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, 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), a roadway loop around Texarkana, Arkansas, United States
* Loop, Blair County, Pennsylvania, United States
* Loop, Indiana County, Pennsylvania, United States
* Loop, West Virginia, 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 downtown neighborhood of Chicago bounded by the elevated railway The Loop
** Loop Retail Historic District, a shopping district in the Chicago Loop
* Delmar Loop, 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 (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, 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
* Porn loop, 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), a London rock band

Other uses in music

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

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), 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, an aid for the hard of hearing
* Local loop, the physical link in telephony that links the customer premises to the telephone company (telco)
* Loop device, 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), an edge that begins and ends on the same vertex
* Loop (topology), 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), 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 section of track that allows reversal of direction without stopping
* Circle route, a public transport route that travels around and connecting the peripheral zones of an area.
* Loop line (railway), a branch line that deviates from a direct route and rejoins it at another location
* Loop route, a main route or highway that forms a closed loop
* Passing loop, a short section of track that allows trains to pass on a single track route
* Ring road or loop, a main route or highway that encircles a town or city
* Spiral (railway), 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), the process of advancing an elementary school teacher with his or her class
* Loop (knot), one of the fundamental structures used to tie knots
* Loop, a cul de sac
* Loop, a type of fingerprint pattern

See also

*
* The Loop (disambiguation)
* Loophole
* Looping (disambiguation)
* Loopy (disambiguation)
* Loupe, a small magnifying glass used by jewelers, watchmakers, and other precision craftsmen
* Circle
* Cycle (disambiguation)
* Cycle graph
* Electronic circuit
* Hoop (disambiguation)
* Inner loop (disambiguation)
* Line echo wave pattern (LEWP)
*
* Möbius strip
* Ring (disambiguation)

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