LR or Lr may refer to:
Businesses and organizations Avianca Costa Rica, an airline, IATA airline code LR Latvijas Radio, a public radio broadcaster in Latvia 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 Computing 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
Other uses in science, technology and mathematics 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 Lactated Ringer's solution, an intravenous crystalloid resuscitative fluid
Other uses Legislative route, a U.S. highway defined by laws passed in a state legislature Light rail, a type of rail-based passenger transport
See also Long Range (disambiguation) Left and right (disambiguation)