Red flag may refer to:

Signs and warnings

  • Red flag (American slavery), signal of an upcoming slave sale
  • Red flag warning, issued by the National Weather Service in the United States
  • Bloody flag, maritime flag signaling an intention to give battle with no quarter (fight to the death)
  • Red flag in motor racing, when conditions are too dangerous to continue the session
  • Red flag in gridiron football
  • Red flag used by a railway conductor

Politics

  • Red flag (politics), predominantly a symbol of left-wing ideologies
  • Flag of the Soviet Union, known as the Red Banner
  • Red Flag Party, a communist party in Venezuela
  • Peruvian Communist Party (Marxist–Leninist), originally Peruvian Communist Party – Red Flag
  • Communist Organization of Spain (Red Flag)
  • Communist Party (Burma), or Red Flag Communist Party
  • Communist Party of India (Marxist–Leninist) Red Flag
  • Marxist-Leninist Party of India (Red Flag)

Botany

  • Red flag, a common name for Iris fulva, a flowering plant endemic to the southern and central United States

Law

  • Red flag law, a state law in the US that allows temporary confiscation of firearms
  • Red flag traffic laws, in the UK and US in the 19th century affecting drivers of early automobiles
  • "Red Flag Act", a Locomotive Act, the 19th-century British road law
  • Red Flags Rule, to help prevent identity theft in the US

Arts, entertainment and media

Film and television

  • Red Flag, a 2012 film starring Alex Karpovsky
  • Red Flag: The Ultimate Game, a 1981 TV film starring Barry Bostwick
  • "Red Flag", an episode of Chicago Fire
  • "Red Flag", an episode of Jericho
  • "Red Flag", an episode of the TV documentary series People's Century
  • Red Flag, fictional group in Alphas

Literature

  • Red Flag (magazine), published by the Chinese Communist Party
  • Red Flag (newspaper), by the Trotskyist organisation Socialist Alternative in Australia
  • Shimbun Akahata ('Newspaper Red Flag'), of the Japanese Communist Party
  • Bandera Roja (La Paz), a socialist newspaper in Bolivia of the 1920s
  • Die Rote Fahne ('The Red Flag'), a German communist newspaper created on 9 November 1918 by Karl Liebknecht and Rosa Luxemburg

Music

  • Red Flag (band), a synthpop band founded in 1984
  • Red Flag (album), by All Saints, 2016
  • "The Red Flag", a socialist song
  • "Bandiera Rossa" ('Red Flag'), a famous song of the Italian labour movement
  • "The Standard of Revolt" (French: Le drapeau rouge 'the red flag'), a French socialist song
  • "Red Flag" (song), by Billy Talent, 2006
  • "Red Flags" (song), by Mimi Webb, 2023
  • "Red Flags", a 2023 song by Josh Ross
  • "Red Flags", a 2023 song by Plain White T's
  • "Red Flag", a song by Slipknot from the 2019 album We Are Not Your Kind
  • "Red Flag", a song by Gwen Stefani from the 2016 album This Is What the Truth Feels Like
  • "Red Flag", a song by Kesha from the 2025 album Period
  • "Red Flag Day", a song by U2 from the 2017 album Songs of Experience
  • "Red Flags", a song by Chris Brown from the 2023 album 11:11
  • "Red Flags", a song by Tinashe from the 2024 album Quantum Baby
  • "Red Flags", a song by Tom Cardy and Montaigne from the 2022 album Big Dumb Idiot
  • "Red Flag", a song by BiC Fizzle, BigWalkDog, and Gucci Mane from the 2022 album So Icy Boyz 22

Other uses

  • Red Flag Group, a compliance risk firm in Hong Kong
  • Red Flag Linux, software
  • Red Flag Publishing House, a book publisher based in China
  • Exercise Red Flag, a series of United States Air Force training exercises
  • Red Flag – Alaska
  • Red Flag, several classes of locomotives by Kim Chong-t'ae Electric Locomotive Works, in North Korea
  • Charles E. Taylor (politician), known as "Red Flag" Taylor, an American politician

See also

  • Hongqi (disambiguation) (Chinese, 'Red Flag')
  • Jolly Roger, a pirate flag
  • Red Flag riots, in Brisbane, Australia 1918–19