LR

LR or Lr may refer to:

Businesses and organizations

 * Avianca Costa Rica, an airline, IATA airline code LR
 * Lenoir–Rhyne University in Hickory, North Carolina
 * Lenong Regiment, an infantry regiment of the South African Army
 * The Republicans (France) (Les Républicains), a political party in France
 * Lloyd's Register, a technical and business services organisation and a maritime classification society

Places

 * Lithuania (Lietuvos Respublika, LR)
 * Liberia (ISO 3166-1 alpha-2 country code LR)
 * .lr, the Internet country code top-level domain for Liberia
 * Little Rock, Arkansas, United States

Science, technology and mathematics

 * LR parser, a type of parser in computer science
 * Lexical resource, a database consisting of one or several dictionaries
 * Link register, a special purpose register in computer architecture
 * Adobe Lightroom, photography software program
 * L(R) (pronounced L of R), in set theory
 * Lawrencium, symbol Lr, a chemical element
 * .22 Long Rifle, a type of rimfire ammunition
 * Limiting reagent, the reactant that is completely consumed in a chemical reaction

Other uses

 * Legislative route, a U.S. highway defined by laws passed in a state legislature
 * Latvijas Radio, a public radio broadcaster in Latvia
 * Light rail, a type of rail-based passenger transport