Loop or LOOP may refer to:

• 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

• 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

• 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

• 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

• Loop (band), a London rock band

• 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

• 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

• 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

• 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

• 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

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

• 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

• 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), 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

• All pages with titles beginning with Loop
• All pages with titles containing Loop
• The Loop (disambiguation)
• Circle
• Cycle (disambiguation)
• Cycle graph
• Electronic circuit
• 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
• Media control symbols § Symbols
• Möbius strip
• Ring (disambiguation)