Abbreviations
- Libya, ISO 3166-1 country code
- .ly, the Top-level domain for Libya
- Light-year, the distance that light travels in one year in a vacuum
- Langley (unit)
- Legislative Yuan, the unicameral legislature of the Republic of China
- El Al, IATA airline designator
- Labour Youth of Ireland
- Laughter Yoga
- .ly, the default filetype extension of the GNU LilyPond sheet music format
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