Ly

LY or ly may refer to:

Government and politics

Science and technology

  • .ly, the Top-level domain for Libya
  • .ly, the default filetype extension of the GNU LilyPond sheet music format
  • ly, Light-year, the distance that light travels in one year in a vacuum
  • Ly, Langley (unit), a unit of energy distribution over a given area

Other uses

See also