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 Internet, an internet service provider in Pennsylvania, United States * 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 (active from 1975), American technology pioneer * Uno Loop (1930–2021), Estonian singer, musician, athlete, actor, and educator * Victoria Loop, brass and guitar player with English band Half Man Half Biscuit * Steven Tyler Loop, American football player

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" (Maaya Sakamoto song), 2005 * "Loop" (Sarah Bonnici song), the entry for Malta in the Eurovision Song Contest 2024 * ''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

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 * ''continue'' statement (in some languages ''skip'', ''cycle'', ''next'', ''loop'', or ''iterate''), a structured control statement that skips ahead to the next iteration of the loop containing it * Microsoft Loop, collaborative software

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

* Aerobatic loop, a type of aerobatic maneuver * Ground loop (aviation), a rapid horizontal (yawing) rotation of a fixed-wing aircraft used in emergencies to bleed of energy while landing * Loop, a type of canoe freestyle 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

* Compulsion loop, a habitual chain of activities that will be repeated by the user to cause them to continue the activity * Loop (biochemistry), a flexible region in a protein's secondary structure *

Loop (education) Looping in education is the practice of moving groups of children up from one Educational stage, grade to the next with the same teacher. For example, a teacher who teaches a third grade class and then goes on to teach the same students, the follow ...

, 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, the end of some dead-end streets * Loop, a type of fingerprint pattern