An old onomatopoeia for the sound of a vibrating string - for instance of a bow or a musical instrument, or the sound of a vibrating spring of (for instance) an air gun.

In modern music, a sharp vibrating sound characteristic of some electric guitars; Fenders and Gretschs are said to have more twang.
Twang may also refer to:

• Twang!
  Twang!
  Twang!! is a musical written by Lionel Bart, based on the character of the legendary outlaw Robin Hood. It is most famous for its disastrous box-office failure. It opened at the Shaftesbury Theatre in London's West End on the 20th December 1965 and closed on 29th January 1966 after just 43...
  
  , a 1965 British musical
  Musical theatre
  Musical theatre is a form of theatre combining songs, spoken dialogue, acting, and dance. The emotional content of the piece – humor, pathos, love, anger – as well as the story itself, is communicated through the words, music, movement and technical aspects of the entertainment as an...
  
   by Lionel Bart
  Lionel Bart
  Lionel Bart was a writer and composer of British pop music and musicals, best known for creating the book, music and lyrics for Oliver!-Early life:...
  
  
• The Twang
  The Twang
  The Twang are an indie rock band from Birmingham, England, formed in 2001. The band have released two studio albums - Love It When I Feel Like This and Jewellery Quarter...
  
  , an indie rock band from Birmingham
• Twang (band)
  Twang (band)
  Twang were an indie band from Manchester/Preston, England, signed to Ron Johnson Records. Their first release was a flexi-disc, "What's The Rub" in 1985. Debut single proper, "Sharp" was released on the Stet label, and later released by Ron Johnson, reaching number 19 on the UK Indie Chart in...
  
  , an indie band from Manchester and Preston
• Twang (album)
  Twang (album)
  -Personnel:*Eddie Bayers – drums*Eric Darken – percussion*Stuart Duncan – fiddle, mandolin*Tom Flora – background vocals*Paul Franklin – steel guitar*Steve Gibson – acoustic, electric, gut string guitars*Mike Haynes – trumpet...
  
  , an album by George Strait
  • "Twang" (song)
    Twang (song)
    "Twang" is the title of a song written by Jim Lauderdale, Kendall Marvel and Jimmy Ritchey, and recorded by American country music singer George Strait. It is the second single from, and title track to, his 2009 studio album Twang. The song was released to radio on October 13, 2009...
    
    , this album's title track
• In Alternative country
  Alternative country
  Alternative country is a loosely defined sub-genre of country music, which includes acts that differ significantly in style from mainstream or pop country music...
  
  , a number of country music subgenres

• Space shuttle#Launch: description of the extreme flexure exhibited during launch of the Space Shuttle