Grin, grins, or GRIN may refer to:

  • A facial expression, see smile
  • Grin (Coroner album), 1993
  • Grin (band), a band formed by Nils Lofgren
  • Grin (Grin album), 1971
  • "Grins" (song), a 2013 song by Charli XCX off the album True Romance (Charli XCX album)
  • Grin (surname)
  • Grins, Austria
  • Germplasm Resources Information Network, a software project
  • Grin (company), a defunct Swedish video game developer
  • GRIN Campaign, an organisation which campaigns for equality in education
  • GRIN, an acronym for gradient index; see Gradient-index optics

See also

  • Grün, a German word and surname meaning green