LY or ly may refer to:
Businesses El Al (IATA airline designator LY) LY Corporation, Japanese company former Z Holdings
Government and politics Libya (ISO 3166-1 country code LY) Lý dynasty, a Vietnamese dynasty Labour Youth of Ireland Legislative Yuan, the unicameral legislature of the Republic of China (Taiwan)
Language -ly, an adjectival and adverbial suffix in English Hungarian ly, or elipszilon, a digraph in the Hungarian alphabet
Science and technology .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 Lý (Vietnamese surname), a Vietnamese surname Ly the Fairy, a character from Rayman 2: The Great Escape
See also
Light year (disambiguation) YL (disambiguation)