Line most often refers to:

• In geometry, art, or similar:
  • Line (geometry), an object that has zero thickness and no curvature (i.e. is straight) and stretches to infinity
  • Line segment, a finite piece of an infinite line
  • Line (graphics), a path drawn between two points
• A line of text:
  • See line length in typography
  • Line (text file), a row of characters as a unit of organization within text files
  • Line (poetry), the fundamental unit of poetic composition
• Telephone line, a single-user circuit on a telephone communication system
• Queue area, known in American English as a place to stand "in line"

Line, lines, The Line, or LINE may also refer to:

• Line (comics), a set of comic books, often with a separate theme or narrative from the main franchise
• Plotline, sequence of connected events in a story

• Line (melody), a linear succession of musical tones that the listener perceives as a single entity
• Line (music) or part, a strand or melody of music played by an individual instrument or voice

• Above the line (ATL) and below the line (BTL) describe advertisements that are targeted to either the general public or specific audiences, respectively
• In the context of staff and line functions, business activities that directly advance the main goal, as opposed to staff functions' support role
• A set of related products from the same company:
  • Line of business (LOB)
  • Product lining
• A line item on a form, such as the bottom line that often represents net income
• A cutoff between categories, such as:
  • Poverty threshold, AKA poverty line or breadline, the amount of income estimated as the minimum needed to afford necessities
• Line management, the direct supervisors of front-line workers

• Transmission line (disambiguation), a structure for transmitting some kind of resource or signal
  • Line level, the standard strength of an audio signal
• Line (video), a measure of video display resolution or image resolution

• Line officer or officer of the line, an officer with authority to command units

• Line (formation), standard tactical formation of forces
• Line infantry, line formation of infantrymen who were part of the "Line Regiments"
• Lines, another word for fortifications

• Line of battle, in naval warfare, a line of warships

• Fault line, a geological term
• Inbred line, either of:
  • Inbred strain or linear organisms, model organisms that are nearly genetically identical and are used in laboratories
  • Products of line breeding, a technique in animal and plant agriculture and horticulture
• Lineage (evolution), a sequence of species that form a line of descent
• Long interspersed nuclear element, or LINE, a DNA sequence of two non-overlapping reading frames, accounting for 21% of human DNA
• Maxwell (unit), the unit of magnetic flux, formerly called line

• Fishing line, used (or intended) for angling
• Kite line, a string or cord attached to the kite, that is held or attached to an anchor, to prevent it from flying away

• Line (ice hockey), group of forwards that play in a group, or "shift", during a game
• Line and length in cricket, the direction and distance to the first bounce of a delivery
• Line of scrimmage, a boundary in American and Canadian football
• Racing line, the optimal path in motorsports

• Line in spread betting, number assigned by bookmakers which handicaps one team and favors another when two teams play each other, aka the spread

• Airline, a company that provides air transport services for traveling passengers and freight
• Log-line, in nautical usage, a piece of rope which has been assigned a function
• Shipping line, a company engaged in sea transport
• Railway line, a railway route or service
• Waterline, the line where the hull of a ship meets the surface of the water

• Line Corporation, a Tokyo-based technology company
  • Line (software), a social messaging application operated by Line Corporation
• The Line, a website and social media campaign promoting respectful relationships, run by Our Watch in Australia
• LINE (combat system), a martial arts system

• Line (given name), a Scandinavian female given name
• Line (singer) (born 1996), a Danish singer and finalist in the Danish X Factor
• Peter Line (bowls) (1930–2025), English lawn and indoor bowler
• Peter Line (snowboarder) (born 1974), American professional snowboarder, snowboard industry entrepreneur, writer, photographer and designer
• Lines (surname)
• The Lines family of Birmingham, England, including:
  • Samuel Lines (1778–1863) and his sons
    • Samuel Rostill Lines (1804–1833)
    • Frederick Thomas Lines (1808–1898)
    • Henry Harris Lines (1800 or 1801–1889)

• Líně, a municipality and village in the Czech Republic
• Linesøya, an island, Åfjord, Norway
• The Line, Saudi Arabia, a planned city
• Line Islands, in the central Pacific
• The Line (art trail), London

• The Line (1938 film) , a Polish drama film
• The Line (2009 film), an American action-crime film
• The Line, a 2009 independent film by Nancy Schwartzman
• The Line (2017 film), a Slovak-Ukrainian crime film
• The Line (2022 film), a Swiss, French, and Belgian drama
• The Line (2023 film), an American drama
• Lines (film), a 2016 Greek film

• The Line (memoir), by Arch and Martin Flanagan
• Line (play), by Israel Horovitz, 1967
• The Line (play), by Timberlake Wertenbaker, 2009
• "Lines" (poem), an 1837 poem by Emily Brontë

• The Line (podcast), 2021 by Dan Taberski

• Lines (The Walker Brothers album), 1976
• Lines (Pandelis Karayorgis album), 1995
• Lines (Unthanks album), 2018

• "Line" (song), 2017 single by Triana Park
• "The Line" (Foo Fighters song), 2017
• "The Line" (Lisa Stansfield song), 1997
• "The Line" (Raye song), 2017
• "The Line", 1995 song by Bruce Springsteen from The Ghost of Tom Joad
• "The Line", 2000 song by Sadist from Lego
• "The Line", 2010 single by Battles
• "LINE", 2015 single by Sukima Switch
• "Line", 2018 song by The Story So Far from Proper Dose
• "The Line", a 2023 song by The Kid Laroi from The First Time
• "The Line", a 2024 song recorded by Twenty One Pilots for Arcane season two
• "Lines" (song), 1976 single by The Walker Brothers
• "Lines", 2007 song by Dead Letter Circus from Dead Letter Circus

• The Line (game show), a 2014 American game show
• The Line (TV series), a Canadian television series
• "The Line" (Heroes), a 2007 episode of the American television series Heroes
• "The Line" (The Amazing World of Gumball), a 2017 episode of the British-American animated television series The Amazing World of Gumball
• The Line, a 2021 documentary series directed by Jeff Zimbalist and Doug Shultz

• Line (unit), an obsolete unit of length equal to one-twelfth or (later) one-tenth of an inch
• Line (heraldry), used to divide and vary fields and charges in heraldry
• Line dance, a choreographed dance of a group of people
• Writing lines, a form of school punishment

• A-line (clothing), a style of skirt or dress
• Line cook, a chef who works a station in a professional restaurant
• Bottom line (disambiguation)
• Linear (disambiguation)
• Liner (disambiguation)
• Lining (disambiguation)
• Lyne (disambiguation)
• Iine (disambiguation)
• All pages with titles containing Line