LB, lb or lb. may refer to:
LBC (originally the London Broadcasting Company) is a London-based national talk and phone-in radio station.
The LBC Crew (Long Beach City Crew) is a collective of Long Beach-based rappers. They were the first act to be executively-produced by Snoop Dogg.
LBC Express, Inc. (previously known as Luzon Brokerage Company) (PSE: LBC) is a courier company based in the Philippines.
LBV 1806-20 is a candidate luminous blue variable (LBV) and likely binary star located nearly 40,000 light-years from the Sun, towards the center of the Milky Way.