Lei

Lei or Leis may refer to:


 * Lei, the plural form of Leu, the name of two currencies. See Romanian leu and Moldovan leu
 * Lei (garland), a Hawaiian flower necklace
 * Lei (surname), a Chinese name
 * Lei, Italy, a town in Sardinia
 * Lei (TV channel), an Italian entertainment television channel
 * l.e.i. (clothing company), a clothing company targeted at teenage girls
 * Lago di Lei, an artificial lake on the Swiss/Italian border
 * Lei Wulong, a fictional character from the Tekken franchise

LEI may refer to:
 * Legal Entity Identifier, an identification system to track all parties involved in a financial security transaction, e.g. buyer, seller and issuing (or underlying) companies
 * LEI, the IATA Airport Code for Almería International Airport
 * Leicestershire, county in central England
 * Leicester railway station, England; National Rail station code LEI
 * Index of Leading Economic Indicators
 * LEI Wageningen UR, a Dutch research institute
 * Lessico etimologico italiano, an etymological dictionary of the Italian language
 * Lotus Enterprise Integrator, a Lotus Domino software application

LEIS may refer to:
 * Low-energy ion scattering, a technique used to characterize the chemical and structural makeup of materials

LeI may refer to:
 * Lashkar-e-Islam, a Pakistani jihadist group