• Bystander effect
  Bystander effect
  The bystander effect or Genovese syndrome is a social psychological phenomenon that refers to cases where individuals do not offer any means of help in an emergency situation to the victim when other people are present...
  
  , a social psychological phenomenon wherein individuals do not offer help in an emergency situation when other people are present
• Bystanders of bullying, the bystander in a bullying context
• Bystanders of scientific misconduct

In media

• Bystander (magazine)
  Bystander (magazine)
  Bystander, a British weekly tabloid magazine, featured reviews, topical sketches, and short stories. Published from Fleet Street, it was established in 1903 by George Holt Thomas...
  
  , was a British weekly tabloid magazine
• Guilty Bystander
  Guilty Bystander
  Guilty Bystander is a 1950 independent film production, considered film noir, starring Zachary Scott and Faye Emerson. The film was the last film appearance for character actor Mary Boland.-Reaction:...
  
  , a 1950 independent film production
• Innocent Bystanders (film)
  Innocent Bystanders (film)
  Innocent Bystanders is a 1972 spy thriller directed by Peter Collinson. It stars Stanley Baker and Geraldine Chaplin. The screenplay was written by James Mitchell based on his 1969 novel of the same name...
  
  , a 1972 film directed by Peter Collinson
• Iowa Bystander
  Iowa Bystander
  The Iowa Bystander is an Iowa newspaper targeted toward an African-American audience. It was founded in Des Moines on June 8, 1894 by William Coalson. From 1896–1922 the publisher was John L. Thompson. In 1922, Thompson sold the newspaper to World War I veteran James B. Morris for $1,700...
  
  , an Iowa newspaper targeted toward an African-American audience

In music

• Bystander (album)
  Bystander (album)
  Bystander is a six track extended play by Canadian alternative rock band Jets Overhead. The album was released on March 8, 2011 and was produced with Neil Osborne of 54-40.The EP is currently only available as a digital download...
  
  , a 2011 six track extended play by Canadian alternative rock band Jets Overhead
• Innocent Bystanders
  Innocent Bystanders
  Innocent Bystanders were a Perth based band formed in 1983 featuring vocalist/songwriter Brett Keyser and guitarist Johnny Diesel.-Biography:...
  
  , were a Perth based band formed in 1983

Other meanings

• Bystander effect (radiobiology)
  Bystander effect (radiobiology)
  The Radiation-Induced Bystander Effect is the phenomenon in which unirradiated cells exhibit irradiated effects as a result of signals received from nearby irradiated cells....
  
  , the phenomenon in which unirradiated cells exhibit irradiated effects as a result of signals received from nearby irradiated cells
• Bystander Nunatak
  Bystander Nunatak
  Bystander Nunatak is a nunatak, high, lying southwest of Forsythe Bluff, on the west side of Daniels Range in the Usarp Mountains. The name applied by the northern party of the New Zealand Geological Survey Antarctic Expedition, 1963–64, is suggestive of the aspect of this relatively isolated...
  
  , a geographical feature in Antarctica