Loop or LOOP may refer to:

Brands and enterprises

  • Loop (mobile), a Bulgarian virtual network operator and co-founder of Loop Live
  • Loop, a company founded by Carlos Vasquez in the 1990s; their clothing worn by Digable Planets
  • Loop Mobile, an Indian mobile phone operator
  • Loop Internet, an internet service provider in Pennsylvania, United States

Geography

  • Loop, Germany, a municipality in Schleswig-Holstein
  • Loop (Texarkana), a roadway loop around Texarkana, Arkansas, United States
  • Loop, Blair County, Pennsylvania, United States, an unincorporated community
  • Loop, Indiana County, Pennsylvania, United States, an unincorporated community
  • Loop, Texas, United States, a census-designated place
  • Loop, West Virginia, United States, an unincorporated community
  • 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 (1998 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 film "short" of a pornographic nature

Music

Groups

  • Loop (band), a London rock band

Other uses in music

  • Loop (album), a 2002 album by Keller Williams
  • Loop (EP), a 2024 extended play by Yves
  • 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 (statement), a method of control flow in computer science
  • LOOP (programming language), the pedagogical primitive recursive programming language with bounded loops
  • Loop (telecommunication) or loopback, 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
  • 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
  • Microsoft Loop, collaborative software
  • Loops (social network), a project from Pixelfed to bring Tiktok-like social media to the Fediverse
  • Control loop, a fundamental component of control systems

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 off 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 using Tesla cars
  • Balloon loop, a section of rail track that allows reversal of direction without stopping
  • Circle route, a public transport route that travels around and connects 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
  • Looping (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, the end of some dead-end streets
  • Loop, a type of fingerprint pattern

See also

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