Loop
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
Ground loop (aviation), a rapid horizontal (yawing) rotation of a fixed-wing aircraft used in emergencies to bleed of energy while landing
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
All pages with titles containing Loop
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)
Media control symbols § Symbols
Möbius strip
Ring (disambiguation)