Look up hairpin or hairpins in Wiktionary, the free dictionary.

A hairpin is a device used to hold a person's hair in place.

Hairpin or Hairpins may also refer to:

• Hairpin turn, a tight turn on a road
• Hairpin cotter, a formed wire fastener most commonly used in clevis pins
• Hairpin clip, a formed wire fastener designed for use in grooved shafts
• A hairpin loop, a pattern in DNA or RNA in biochemistry
• β-Hairpin, a secondary structure motif of proteins
• Hairpins (film), a 1920 film directed by Fred Niblo
• Hairpin, in music, the nickname for crescendo and decrescendo markings. See Dynamics (music)#Gradual changes
• The Devil's Hairpin, a 1957 American feature film about car racing
• Hairpin Arts Center, a community art center in Chicago
• Hairpin Banksia, woody shrub.
• Hairpin Beach, a gazetted beach in Stanley, Hong Kong
• Hairpin RNA, an artificial RNA molecule
• Hairpin lace, a lace-making technique
• Hairpin ribozyme, a small section of RNA that can act as a ribozyme
• Ramsey Hairpin, a hairpin bend on the course of the Isle of Man TT Races
• The Hairpin, a women's website
• The Human Hairpin, a nickname for the American boxer, Harry Harris
• Hairpin network address translation