Ly

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LY or ly may refer to:

Government and politics[edit]

Science and technology[edit]

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

Other uses[edit]