Lb. is the standard abbreviation for the pound unit of mass.
LB, lb or lb. may also refer to:
Businesses and organizations L Brands, an American clothing retailer Lane Bryant, a plus-size clothing retailer Laurier Brantford, a satellite campus of Wilfrid Laurier University in Brantford, Ontario, Canada Movement for Unification (), a nationalist Albanian political party in Kosovo Ljubljanska banka, a bank named after and based in Ljubljana, Slovenia that operated in SFR Yugoslavia airline (IATA code) LB.ua (Left Bank (online edition), a Ukrainian online newspaper
Places Labrador (former postal abbreviation) Laurier Brantford, a satellite campus of Wilfrid Laurier University Lebanon (ISO 3166-1 alpha-2 country code) Lebap, Turkmenistan (vehicle registration suffix LB) Long Beach, California Los Baños, Laguna, Philippines
Science and technology Mathematics and computing .lb, the Internet country code top-level domain (ccTLD) for Lebanon Lattice Boltzmann methods, a class of computational fluid dynamics (CFD) methods for fluid simulation Liberty BASIC, a programming language Binary logarithm, Lower bound, a mathematical concept in order theory
Units of measurement Pound (mass), abbreviation derived from Latin libra Pound-force
Other uses in science and technology L-shaped electrical conduit body with the outlet in the Back ("LB") Lysogeny broth (also known as Luria or Luria-Bertani broth), a microbial growth medium
Sport Left back, a defensive position in Association football Linebacker, a position in American and Canadian football Leg bye, in cricket, a run scored by the batting team without the batsman hitting the ball
Other uses LB (car ferries), one of several ferries on the HH Ferry route between Elsinore, Denmark and Helsingborg, Sweden Luxembourgish language (ISO 639 alpha-2 code) Letterboxing (filming)