LKI may refer to:
- Lazare Kaplan International, a diamond manufacturing and distribution company based in New York City
- lki, the ISO 639-3 code for Laki language
- Liga Komunista Iraultzailea, a political party in Spain
- Lasikin Airport, the IATA code LKI
See also
edit- LK I, a German light tank prototype of the First World War